InChI=1S/C27H28O17/c28-7-13-15(30)17(32)21(36)26(43-13)41-10-5-11(29)14-12(6-10)42-23(19(34)16(14)31)8-1-3-9(4-2-8)40-27-22(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)