InChI=1S/C31H34O12/c1-15(4-3-5-16(2)14-32)6-9-21-24(35)20-11-8-18(41-31-27(38)25(36)26(37)29(43-31)30(39)40)13-23(20)42-28(21)19-10-7-17(33)12-22(19)34/h5-8,10-13,25-27,29,31-34,36-38H,3-4,9,14H2,1-2H3,(H,39,40)/b15-6?,16-5+