InChI=1S/C30H34O17/c1-30(39,11-43-12-31)9-19(34)44-10-18-21(35)23(37)24(38)29(46-18)47-28-26(41-3)22(36)20-15(33)8-16(45-25(20)27(28)42-4)13-5-6-14(32)17(7-13)40-2/h5-8,12,18,21,23-24,29,32,35-39H,9-11H2,1-4H3