InChI=1S/C30H38O12/c1-15(2)11-21(31)24(33)17(4)13-20(40-30-27(36)25(34)26(35)28(42-30)29(37)38)12-16(3)9-10-39-19-7-5-18-6-8-23(32)41-22(18)14-19/h5-9,11,13-14,20-21,24-28,30-31,33-36H,10,12H2,1-4H3,(H,37,38)/b16-9+,17-13-