InChI=1S/C31H35NO8/c1-3-24(25(19-8-5-4-6-9-19)20-12-14-22(15-13-20)38-17-16-32-2)21-10-7-11-23(18-21)39-31-28(35)26(33)27(34)29(40-31)30(36)37/h4-15,18,26-29,31-35H,3,16-17H2,1-2H3,(H,36,37)/b25-24+