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