InChI=1S/C20H27NO4S/c22-19(23)11-7-2-1-6-10-18-15-12-13-16(14-15)20(18)21-26(24,25)17-8-4-3-5-9-17/h1,3-6,8-9,15-16,18,20-21H,2,7,10-14H2,(H,22,23)/b6-1-/t15-,16+,18+,20+/m1/s1