InChI=1S/C25H27NO5S/c1-19(31-32(27,28)29)24(20-9-5-3-6-10-20)25(21-11-7-4-8-12-21)22-13-15-23(16-14-22)30-18-17-26-2/h3-16,19,26H,17-18H2,1-2H3,(H,27,28,29)/b25-24+