Related literature   {#sec1}
====================

For the crystal structures of related compounds, see: Wang *et al.* (2010[@bb3]); Yang *et al.* (2012[@bb4]). For details of the synthesis, see: Zhou *et al.* (2011[@bb5]).

Experimental   {#sec2}
==============

 {#sec2.1}

### Crystal data   {#sec2.1.1}

C~17~H~16~N~2~O~2~S*M* *~r~* = 312.38Monoclinic,*a* = 14.174 (3) Å*b* = 5.9321 (12) Å*c* = 18.796 (4) Åβ = 99.06 (3)°*V* = 1560.7 (5) Å^3^*Z* = 4Cu *K*α radiationμ = 1.91 mm^−1^*T* = 113 K0.26 × 0.24 × 0.22 mm

### Data collection   {#sec2.1.2}

Rigaku Saturn diffractometerAbsorption correction: multi-scan (*CrystalClear*; Rigaku/MSC, 2005[@bb1]) *T* ~min~ = 0.636, *T* ~max~ = 0.67816000 measured reflections3034 independent reflections2819 reflections with *I* \> 2σ(*I*)*R* ~int~ = 0.045

### Refinement   {#sec2.1.3}

*R*\[*F* ^2^ \> 2σ(*F* ^2^)\] = 0.038*wR*(*F* ^2^) = 0.098*S* = 1.083034 reflections201 parameters1 restraintH-atom parameters constrainedΔρ~max~ = 0.30 e Å^−3^Δρ~min~ = −0.28 e Å^−3^

 {#d5e424}

Data collection: *CrystalClear* (Rigaku/MSC, 2005[@bb1]); cell refinement: *CrystalClear*; data reduction: *CrystalClear*; program(s) used to solve structure: *SHELXS97* (Sheldrick, 2008[@bb2]); program(s) used to refine structure: *SHELXL97* (Sheldrick, 2008[@bb2]); molecular graphics: *SHELXTL* (Sheldrick, 2008[@bb2]); software used to prepare material for publication: *CrystalStructure* (Rigaku/MSC, 2005[@bb1]).

Supplementary Material
======================

###### 

Click here for additional data file.

Crystal structure: contains datablock(s) global, I. DOI: [10.1107/S1600536813009513/cv5399sup1.cif](http://dx.doi.org/10.1107/S1600536813009513/cv5399sup1.cif)

###### 

Click here for additional data file.

Structure factors: contains datablock(s) I. DOI: [10.1107/S1600536813009513/cv5399Isup2.hkl](http://dx.doi.org/10.1107/S1600536813009513/cv5399Isup2.hkl)

###### 

Click here for additional data file.

Supplementary material file. DOI: [10.1107/S1600536813009513/cv5399Isup3.cdx](http://dx.doi.org/10.1107/S1600536813009513/cv5399Isup3.cdx)

###### 

Click here for additional data file.

Supplementary material file. DOI: [10.1107/S1600536813009513/cv5399Isup4.cml](http://dx.doi.org/10.1107/S1600536813009513/cv5399Isup4.cml)

Additional supplementary materials: [crystallographic information](http://scripts.iucr.org/cgi-bin/sendsupfiles?cv5399&file=cv5399sup0.html&mime=text/html); [3D view](http://scripts.iucr.org/cgi-bin/sendcif?cv5399sup1&Qmime=cif); [checkCIF report](http://scripts.iucr.org/cgi-bin/paper?cv5399&checkcif=yes)

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: [CV5399](http://scripts.iucr.org/cgi-bin/sendsup?cv5399)).

This project was supported by the National Major Scientific and Technological Special Project for \"Significant New Drugs Development\" (No. 2013ZX09102014). The authors also thank Mr Hai-Bin Song of Nankai University for the X-ray crystallographic determination and helpful suggestions.

Comment
=======

As a continuation of our structural study of tetrahydrothienopyridine derivatives (Yang *et al.*, 2012), herein we present the crystal structure of the title compound (I).

In (I) (Fig. 1), all bond lengths and angles are normal and correspond to those observed in the related compounds 5-\[(2-cyclopropylcarbonyl)(2- fluorophenyl)methyl\]-4,5,6,7-tetrahydrothieno\[3,2-*c*\]pyridin- 2-yl acetate (Prasugrel) (Wang *et al.*, 2010) and 5-(2-chlorobenzyl)-4,5,6,7-tetrahydrothieno\[3,2-*c*\]pyridin-2-yl acetate (Yang *et al.*, 2012). The ester chain in (I) is almost planar with a mean deviation of 0.0021 Å. The tetrahydropyridine ring exhibits a half-chair conformation. The mean planes of the ester chain and benzene ring are twisted at 5.5 (1) and 81.32 (5)°, respectively, from the plane of thiophene ring. In the crystal, weak C---H···O interactions (Table 1) link the molecules related by translation in \[100\] into chains.

Experimental {#experimental}
============

The title compound was prepared according to the method of Zhou *et al.* (2011). 19.2 g of 5,6,7,7a-tetrahydrothieno\[3,2-*c*\]pyridin-2(4*H*)-one hydrochloride and 29 g of *N*-methyl morpholine were dissolved in 100 ml of CHCl~3~. 42.6 g of 2-(bromomethyl)benzonitrile was dropwised into the mixture and then refluxed for 4 h. After filtration, the resulting filtrate was evaporated under reduced pressure. The residue was dissolved in diethyl ether, adjust the pH=5 to get 2-{(2-oxo-7,7a-dihydrothieno \[3,2-*c*\]pyridin-5(2*H*,4*H*,6*H*)-yl)methyl} benzonitrile as an intermediate. The intermediate, together with 14.5 g of *N*-methyl morpholine and 10 g of acetic anhydride was dissolved in 150 ml of acetonitrile and stirred under 30°C for 2 h. The mixture was evaporated under reduced pressure and yellow oil was obtained. The oil was dissolved in CHCl~3~, washed with saturated brines for 3 times. The crude product was purified by silica gel chromatography to give white powder. Colorless single crystals were grown from a methanol solution.

Refinement {#refinement}
==========

All H atoms were positioned geometrically and refined using a riding model, with d(C---H) = 0.95 - 0.99 Å, and *U*~iso~ (H) = 1.5 or 1.2 *U*~eq~(C).

Figures
=======

![The molecular structure of (I) showing the atom-numbering scheme and 50% probability displacement ellipsoids.](e-69-0o713-fig1){#Fap1}

Crystal data {#tablewrapcrystaldatalong}
============

  ------------------------- ---------------------------------------
  C~17~H~16~N~2~O~2~S       *F*(000) = 656
  *M~r~* = 312.38           *D*~x~ = 1.329 Mg m^−3^
  Monoclinic, *P*2~1~/*n*   Cu *K*α radiation, λ = 1.54187 Å
  Hall symbol: -P 2yn       Cell parameters from 2001 reflections
  *a* = 14.174 (3) Å        θ = 27.6--72.2°
  *b* = 5.9321 (12) Å       µ = 1.91 mm^−1^
  *c* = 18.796 (4) Å        *T* = 113 K
  β = 99.06 (3)°            Prism, colourless
  *V* = 1560.7 (5) Å^3^     0.26 × 0.24 × 0.22 mm
  *Z* = 4                   
  ------------------------- ---------------------------------------

Data collection {#tablewrapdatacollectionlong}
===============

  ---------------------------------------------------------------------- --------------------------------------
  Rigaku Saturn diffractometer                                           3034 independent reflections
  Radiation source: fine-focus sealed tube                               2819 reflections with *I* \> 2σ(*I*)
  Multilayer monochromator                                               *R*~int~ = 0.045
  Detector resolution: 14.63 pixels mm^-1^                               θ~max~ = 72.5°, θ~min~ = 3.6°
  ω scans                                                                *h* = −17→17
  Absorption correction: multi-scan (*CrystalClear*; Rigaku/MSC, 2005)   *k* = −7→7
  *T*~min~ = 0.636, *T*~max~ = 0.678                                     *l* = −17→23
  16000 measured reflections                                             
  ---------------------------------------------------------------------- --------------------------------------

Refinement {#tablewraprefinementdatalong}
==========

  ---------------------------------------------------------------- ----------------------------------------------------------------------------------------------------
  Refinement on *F*^2^                                             Secondary atom site location: difference Fourier map
  Least-squares matrix: full                                       Hydrogen site location: inferred from neighbouring sites
  *R*\[*F*^2^ \> 2σ(*F*^2^)\] = 0.038                              H-atom parameters constrained
  *wR*(*F*^2^) = 0.098                                             *w* = 1/\[σ^2^(*F*~o~^2^) + (0.0608*P*)^2^ + 0.3535*P*\] where *P* = (*F*~o~^2^ + 2*F*~c~^2^)/3
  *S* = 1.08                                                       (Δ/σ)~max~ = 0.001
  3034 reflections                                                 Δρ~max~ = 0.30 e Å^−3^
  201 parameters                                                   Δρ~min~ = −0.28 e Å^−3^
  1 restraint                                                      Extinction correction: *SHELXL97* (Sheldrick, 2008), Fc^\*^=kFc\[1+0.001xFc^2^λ^3^/sin(2θ)\]^-1/4^
  Primary atom site location: structure-invariant direct methods   Extinction coefficient: 0.0040 (4)
  ---------------------------------------------------------------- ----------------------------------------------------------------------------------------------------

Special details {#specialdetails}
===============

  -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
  Geometry. All e.s.d.\'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.\'s are taken into account individually in the estimation of e.s.d.\'s in distances, angles and torsion angles; correlations between e.s.d.\'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.\'s is used for estimating e.s.d.\'s involving l.s. planes.
  Refinement. Refinement of *F*^2^ against ALL reflections. The weighted *R*-factor *wR* and goodness of fit *S* are based on *F*^2^, conventional *R*-factors *R* are based on *F*, with *F* set to zero for negative *F*^2^. The threshold expression of *F*^2^ \> σ(*F*^2^) is used only for calculating *R*-factors(gt) *etc*. and is not relevant to the choice of reflections for refinement. *R*-factors based on *F*^2^ are statistically about twice as large as those based on *F*, and *R*- factors based on ALL data will be even larger.
  -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å^2^) {#tablewrapcoords}
==================================================================================================

  ------ --------------- --------------- --------------- -------------------- --
         *x*             *y*             *z*             *U*~iso~\*/*U*~eq~   
  S1     0.07455 (2)     0.16825 (5)     0.143145 (17)   0.02086 (13)         
  O1     0.02603 (6)     −0.21422 (16)   0.06058 (5)     0.0237 (2)           
  O2     −0.09148 (7)    −0.05922 (19)   0.11147 (6)     0.0356 (3)           
  N1     0.38740 (7)     0.30018 (18)    0.16585 (6)     0.0202 (3)           
  N2     0.64150 (12)    0.3514 (3)      0.02028 (9)     0.0527 (4)           
  C1     0.09324 (9)     −0.0540 (2)     0.08710 (7)     0.0201 (3)           
  C2     0.18393 (9)     −0.0624 (2)     0.07280 (7)     0.0201 (3)           
  H2     0.2064          −0.1715         0.0425          0.024\*              
  C3     0.24163 (9)     0.1132 (2)      0.10896 (7)     0.0187 (3)           
  C4     0.19251 (9)     0.2503 (2)      0.14809 (7)     0.0196 (3)           
  C5     0.23440 (9)     0.4496 (2)      0.19049 (7)     0.0216 (3)           
  H5A    0.2447          0.4142          0.2426          0.026\*              
  H5B    0.1904          0.5799          0.1820          0.026\*              
  C6     0.32936 (9)     0.5055 (2)      0.16606 (7)     0.0217 (3)           
  H6A    0.3175          0.5712          0.1170          0.026\*              
  H6B    0.3643          0.6183          0.1990          0.026\*              
  C7     0.34597 (9)     0.1510 (2)      0.10650 (7)     0.0206 (3)           
  H7A    0.3800          0.0047          0.1106          0.025\*              
  H7B    0.3537          0.2201          0.0598          0.025\*              
  C8     0.48585 (9)     0.3588 (2)      0.15919 (8)     0.0245 (3)           
  H8A    0.5078          0.4827          0.1931          0.029\*              
  H8B    0.4879          0.4140          0.1097          0.029\*              
  C9     0.55298 (9)     0.1608 (2)      0.17475 (7)     0.0207 (3)           
  C10    0.62212 (9)     0.1119 (2)      0.13184 (8)     0.0255 (3)           
  C11    0.68601 (10)    −0.0673 (3)     0.14838 (9)     0.0321 (3)           
  H11    0.7327          −0.0980         0.1185          0.038\*              
  C12    0.68115 (10)    −0.1995 (2)     0.20814 (9)     0.0311 (3)           
  H12    0.7242          −0.3218         0.2195          0.037\*              
  C13    0.61310 (10)    −0.1526 (2)     0.25154 (8)     0.0276 (3)           
  H13    0.6097          −0.2425         0.2929          0.033\*              
  C14    0.54986 (9)     0.0252 (2)      0.23487 (8)     0.0250 (3)           
  H14    0.5035          0.0551          0.2651          0.030\*              
  C15    0.63104 (11)    0.2481 (3)      0.06926 (9)     0.0351 (4)           
  C16    −0.06452 (9)    −0.2078 (2)     0.07641 (8)     0.0233 (3)           
  C17    −0.12011 (10)   −0.4073 (2)     0.04513 (8)     0.0270 (3)           
  H17A   −0.1192         −0.4134         −0.0069         0.040\*              
  H17B   −0.1862         −0.3947         0.0539          0.040\*              
  H17C   −0.0914         −0.5451         0.0678          0.040\*              
  ------ --------------- --------------- --------------- -------------------- --

Atomic displacement parameters (Å^2^) {#tablewrapadps}
=====================================

  ----- -------------- ------------- ------------ -------------- -------------- ---------------
        *U*^11^        *U*^22^       *U*^33^      *U*^12^        *U*^13^        *U*^23^
  S1    0.01803 (19)   0.0246 (2)    0.0204 (2)   0.00246 (11)   0.00426 (13)   −0.00427 (11)
  O1    0.0176 (5)     0.0254 (5)    0.0282 (5)   −0.0002 (4)    0.0038 (4)     −0.0072 (4)
  O2    0.0237 (5)     0.0417 (6)    0.0437 (7)   −0.0034 (4)    0.0123 (5)     −0.0190 (5)
  N1    0.0178 (5)     0.0186 (5)    0.0246 (6)   0.0000 (4)     0.0041 (4)     0.0001 (4)
  N2    0.0543 (10)    0.0658 (11)   0.0433 (9)   0.0074 (8)     0.0242 (8)     0.0159 (8)
  C1    0.0199 (6)     0.0217 (6)    0.0185 (6)   0.0014 (5)     0.0017 (5)     −0.0015 (5)
  C2    0.0205 (6)     0.0205 (6)    0.0191 (6)   0.0041 (5)     0.0028 (5)     −0.0012 (5)
  C3    0.0197 (6)     0.0200 (6)    0.0163 (6)   0.0024 (5)     0.0025 (5)     0.0022 (5)
  C4    0.0191 (6)     0.0221 (6)    0.0174 (6)   0.0026 (5)     0.0028 (5)     0.0005 (5)
  C5    0.0225 (6)     0.0216 (6)    0.0209 (7)   0.0025 (5)     0.0046 (5)     −0.0020 (5)
  C6    0.0250 (6)     0.0179 (6)    0.0225 (7)   0.0009 (5)     0.0050 (5)     −0.0001 (5)
  C7    0.0202 (6)     0.0202 (6)    0.0219 (7)   0.0014 (5)     0.0051 (5)     −0.0013 (5)
  C8    0.0207 (6)     0.0224 (6)    0.0310 (8)   −0.0028 (5)    0.0063 (5)     0.0020 (5)
  C9    0.0167 (6)     0.0218 (6)    0.0234 (7)   −0.0039 (5)    0.0020 (5)     −0.0015 (5)
  C10   0.0214 (6)     0.0303 (7)    0.0255 (7)   −0.0028 (5)    0.0059 (5)     −0.0009 (6)
  C11   0.0236 (7)     0.0369 (8)    0.0376 (9)   0.0032 (6)     0.0103 (6)     −0.0024 (7)
  C12   0.0217 (7)     0.0268 (7)    0.0433 (9)   0.0026 (5)     0.0009 (6)     0.0013 (6)
  C13   0.0242 (7)     0.0268 (7)    0.0303 (8)   −0.0040 (5)    0.0003 (6)     0.0052 (6)
  C14   0.0226 (6)     0.0275 (7)    0.0257 (7)   −0.0023 (5)    0.0058 (5)     0.0011 (6)
  C15   0.0322 (8)     0.0425 (9)    0.0337 (8)   0.0026 (7)     0.0152 (7)     0.0033 (7)
  C16   0.0182 (6)     0.0285 (7)    0.0231 (7)   0.0011 (5)     0.0028 (5)     −0.0003 (5)
  C17   0.0229 (7)     0.0270 (7)    0.0306 (8)   −0.0010 (5)    0.0029 (6)     −0.0025 (6)
  ----- -------------- ------------- ------------ -------------- -------------- ---------------

Geometric parameters (Å, º) {#tablewrapgeomlong}
===========================

  -------------------- -------------- ----------------------- --------------
  S1---C4              1.7297 (13)    C7---H7A                0.9900
  S1---C1              1.7338 (13)    C7---H7B                0.9900
  O1---C16             1.3629 (16)    C8---C9                 1.5109 (18)
  O1---C1              1.3819 (16)    C8---H8A                0.9900
  O2---C16             1.1987 (17)    C8---H8B                0.9900
  N1---C8              1.4625 (16)    C9---C14                1.393 (2)
  N1---C6              1.4702 (16)    C9---C10                1.394 (2)
  N1---C7              1.4716 (17)    C10---C11               1.399 (2)
  N2---C15             1.135 (2)      C10---C15               1.449 (2)
  C1---C2              1.3549 (18)    C11---C12               1.381 (2)
  C2---C3              1.4284 (18)    C11---H11               0.9500
  C2---H2              0.9500         C12---C13               1.386 (2)
  C3---C4              1.3594 (18)    C12---H12               0.9500
  C3---C7              1.5037 (17)    C13---C14               1.388 (2)
  C4---C5              1.4955 (18)    C13---H13               0.9500
  C5---C6              1.5256 (18)    C14---H14               0.9500
  C5---H5A             0.9900         C16---C17               1.4905 (19)
  C5---H5B             0.9900         C17---H17A              0.9800
  C6---H6A             0.9900         C17---H17B              0.9800
  C6---H6B             0.9900         C17---H17C              0.9800
                                                              
  C4---S1---C1         90.43 (6)      N1---C8---C9            112.25 (10)
  C16---O1---C1        121.43 (10)    N1---C8---H8A           109.2
  C8---N1---C6         110.18 (10)    C9---C8---H8A           109.2
  C8---N1---C7         110.52 (10)    N1---C8---H8B           109.2
  C6---N1---C7         110.09 (10)    C9---C8---H8B           109.2
  C2---C1---O1         121.66 (11)    H8A---C8---H8B          107.9
  C2---C1---S1         112.89 (10)    C14---C9---C10          117.63 (12)
  O1---C1---S1         125.42 (9)     C14---C9---C8           120.42 (12)
  C1---C2---C3         111.65 (11)    C10---C9---C8           121.90 (12)
  C1---C2---H2         124.2          C9---C10---C11          121.26 (13)
  C3---C2---H2         124.2          C9---C10---C15          120.83 (13)
  C4---C3---C2         112.94 (11)    C11---C10---C15         117.90 (13)
  C4---C3---C7         121.15 (12)    C12---C11---C10         119.92 (13)
  C2---C3---C7         125.90 (11)    C12---C11---H11         120.0
  C3---C4---C5         124.54 (12)    C10---C11---H11         120.0
  C3---C4---S1         112.08 (10)    C11---C12---C13         119.56 (14)
  C5---C4---S1         123.38 (9)     C11---C12---H12         120.2
  C4---C5---C6         107.86 (10)    C13---C12---H12         120.2
  C4---C5---H5A        110.1          C12---C13---C14         120.29 (14)
  C6---C5---H5A        110.1          C12---C13---H13         119.9
  C4---C5---H5B        110.1          C14---C13---H13         119.9
  C6---C5---H5B        110.1          C13---C14---C9          121.34 (13)
  H5A---C5---H5B       108.4          C13---C14---H14         119.3
  N1---C6---C5         109.95 (10)    C9---C14---H14          119.3
  N1---C6---H6A        109.7          N2---C15---C10          177.32 (17)
  C5---C6---H6A        109.7          O2---C16---O1           122.22 (12)
  N1---C6---H6B        109.7          O2---C16---C17          127.33 (12)
  C5---C6---H6B        109.7          O1---C16---C17          110.45 (11)
  H6A---C6---H6B       108.2          C16---C17---H17A        109.5
  N1---C7---C3         110.09 (10)    C16---C17---H17B        109.5
  N1---C7---H7A        109.6          H17A---C17---H17B       109.5
  C3---C7---H7A        109.6          C16---C17---H17C        109.5
  N1---C7---H7B        109.6          H17A---C17---H17C       109.5
  C3---C7---H7B        109.6          H17B---C17---H17C       109.5
  H7A---C7---H7B       108.2                                  
                                                              
  C16---O1---C1---C2   178.55 (12)    C4---C3---C7---N1       16.65 (17)
  C16---O1---C1---S1   0.90 (18)      C2---C3---C7---N1       −163.09 (12)
  C4---S1---C1---C2    −0.56 (11)     C6---N1---C8---C9       167.62 (11)
  C4---S1---C1---O1    177.27 (12)    C7---N1---C8---C9       −70.50 (14)
  O1---C1---C2---C3    −176.86 (11)   N1---C8---C9---C14      −46.34 (17)
  S1---C1---C2---C3    1.06 (14)      N1---C8---C9---C10      136.16 (13)
  C1---C2---C3---C4    −1.16 (16)     C14---C9---C10---C11    0.2 (2)
  C1---C2---C3---C7    178.60 (12)    C8---C9---C10---C11     177.72 (13)
  C2---C3---C4---C5    −179.07 (12)   C14---C9---C10---C15    −178.76 (13)
  C7---C3---C4---C5    1.2 (2)        C8---C9---C10---C15     −1.2 (2)
  C2---C3---C4---S1    0.74 (15)      C9---C10---C11---C12    0.0 (2)
  C7---C3---C4---S1    −179.03 (10)   C15---C10---C11---C12   178.99 (14)
  C1---S1---C4---C3    −0.12 (11)     C10---C11---C12---C13   −0.3 (2)
  C1---S1---C4---C5    179.69 (11)    C11---C12---C13---C14   0.4 (2)
  C3---C4---C5---C6    14.85 (18)     C12---C13---C14---C9    −0.2 (2)
  S1---C4---C5---C6    −164.94 (10)   C10---C9---C14---C13    −0.1 (2)
  C8---N1---C6---C5    −166.73 (11)   C8---C9---C14---C13     −177.70 (12)
  C7---N1---C6---C5    71.13 (13)     C9---C10---C15---N2     162 (4)
  C4---C5---C6---N1    −49.11 (14)    C11---C10---C15---N2    −17 (4)
  C8---N1---C7---C3    −173.55 (10)   C1---O1---C16---O2      3.0 (2)
  C6---N1---C7---C3    −51.61 (13)    C1---O1---C16---C17     −176.31 (11)
  -------------------- -------------- ----------------------- --------------

Hydrogen-bond geometry (Å, º) {#tablewraphbondslong}
=============================

  ------------------- --------- --------- ------------- ---------------
  *D*---H···*A*       *D*---H   H···*A*   *D*···*A*     *D*---H···*A*
  C11---H11···O2^i^   0.95      2.53      3.3346 (19)   143
  ------------------- --------- --------- ------------- ---------------

Symmetry code: (i) *x*+1, *y*, *z*.

###### Hydrogen-bond geometry (Å, °)

  *D*---H⋯*A*       *D*---H   H⋯*A*   *D*⋯*A*       *D*---H⋯*A*
  ----------------- --------- ------- ------------- -------------
  C11---H11⋯O2^i^   0.95      2.53    3.3346 (19)   143

Symmetry code: (i) .
