Spectra of the13C-NMR, δc (ppm): 89 (C4); 82.395 (C5); 77.89 (C3); 76.358 (C6); 73.414 (C5); 72.982 (C1).
Phổ 13 C-NMR, δc (ppm): 89 (C 4); 82,395 (C 5); 77,189 (C 3); 76,358 (C 6); 73,414 (C 5); 72,982 (C 1).