wherein R1, R2, R3, R4, and R5 are each selected from {HEAD ~ the group} consisting of hydrogen, hydroxy, amino, alkyl, alkoxy, {TAIL ~ cycloalkyl} or phenol, optionally substituted with alkyl, alkoxy, hydroxy or halo, and only one of R1, R2, R3, R4, and R5 is amino 
consisting of
wherein R1 , R2 , R3 , R4 , and R5 are each selected from { HEAD ~ the group } consisting of hydrogen , hydroxy , amino , alkyl , alkoxy , { TAIL ~ cycloalkyl } or phenol , optionally substituted with alkyl , alkoxy , hydroxy or halo , and only one of R1 , R2 , R3 , R4 , and R5 is amino
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH