InChI=1S/C27H28O17/c28-7-13-15(30)17(32)21(36)26(43-13)40-9-3-1-8(2-4-9)23-19(34)16(31)14-11(29)5-10(6-12(14)42-23)41-27-22(37)18(33)20(35)24(44-27)25(38)39/h1-6,13,15,17-18,20-22,24,26-30,32-37H,7H2,(H,38,39)