InChI=1S/C27H28O18/c28-6-11-13(31)15(33)19(37)26(42-11)43-22-9(30)5-10-12(14(32)17(35)21(41-10)7-1-3-8(29)4-2-7)23(22)44-27-20(38)16(34)18(36)24(45-27)25(39)40/h1-5,11,13,15-16,18-20,24,26-31,33-38H,6H2,(H,39,40)