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