InChI=1/C27H32O15/c1-38-15-5-4-11(8-16(15)40-27-23(35)20(32)21(33)24(42-27)25(36)37)2-3-12-6-13(29)9-14(7-12)39-26-22(34)19(31)18(30)17(10-28)41-26/h2-9,17-24,26-35H,10H2,1H3,(H,36,37)/b3-2+