InChI=1S/C27H20O18/c28-2-5-14(31)20(37)24-23(43-5)12-11(27(42)45-24)8(16(33)19(36)18(12)35)7-10(25(39)40)9-6-3(1-4(29)13(30)15(6)32)26(41)44-22(9)21(38)17(7)34/h1,5,14,20,23-24,28-38H,2H2,(H,39,40)