InChI=1S/C26H29NO5S/c1-27(2)18-20-31-24-15-13-23(14-16-24)26(22-11-7-4-8-12-22)25(17-19-32-33(28,29)30)21-9-5-3-6-10-21/h3-16H,17-20H2,1-2H3,(H,28,29,30)/b26-25+