InChI=1S/C31H34O16/c1-12-24(37)28(43-13(2)32)29(44-14(3)33)31(42-12)41-11-22-25(38)26(39)27(40)30(47-22)45-17-8-18(35)23-19(36)10-20(46-21(23)9-17)15-4-6-16(34)7-5-15/h4-10,12,22,24-31,34-35,37-40H,11H2,1-3H3