InChI=1S/C27H29NO4S/c29-21-8-4-20(5-9-21)27-26(32-24-13-10-22(30)18-25(24)33-27)19-6-11-23(12-7-19)31-17-16-28-14-2-1-3-15-28/h4-13,18,26-27,29-30H,1-3,14-17H2/t26-,27+/m0/s1