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