InChI=1S/C28H30O18/c1-39-20-9(31)3-7-13-14-8(26(38)44-23(13)20)4-10(22(40-2)24(14)45-25(7)37)41-27-19(36)17(34)21(12(6-30)43-27)46-28-18(35)16(33)15(32)11(5-29)42-28/h3-4,11-12,15-19,21,27-36H,5-6H2,1-2H3