InChI=1S/C33H34O8/c1-6-7-26(23-11-15-29(38-2)31(19-23)40-4)27-16-22(18-32(41-5)33(27)37)9-13-25(35)20-24(34)12-8-21-10-14-28(36)30(17-21)39-3/h6-19,26,36-37H,20H2,1-5H3/b7-6+,12-8+,13-9+