InChI=1S/C28H26O18/c1-42-28-22(38)24(46-27(41)11-6-16(33)21(37)17(34)7-11)23(45-26(40)10-4-14(31)20(36)15(32)5-10)18(44-28)8-43-25(39)9-2-12(29)19(35)13(30)3-9/h2-7,18,22-24,28-38H,8H2,1H3