InChI=1S/C31H34O12/c1-14(2)4-6-16-8-18(9-17(25(16)35)7-5-15(3)13-32)21-12-20(34)24-22(41-21)10-19(33)11-23(24)42-31-28(38)26(36)27(37)29(43-31)30(39)40/h4-5,8-12,26-29,31-33,35-38H,6-7,13H2,1-3H3,(H,39,40)/b15-5+