InChI=1S/C31H35NO8/c1-3-22(19-10-6-4-7-11-19)25(20-12-8-5-9-13-20)23-15-14-21(38-17-16-32-2)18-24(23)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)/b25-22+