InChI=1S/C27H28O17/c1-7-15(30)17(32)21(36)26(40-7)41-9-5-12-14(16(31)19(34)23(42-12)8-2-3-10(28)11(29)4-8)13(6-9)43-27-22(37)18(33)20(35)24(44-27)25(38)39/h2-7,15,17-18,20-22,24,26-30,32-37H,1H3,(H,38,39)