InChI=1S/C24H26N2O7/c1-12-19(27)20(28)21(29)23(32-12)33-24(2,3)11-10-13-6-4-8-15-17(13)26-18-14(22(30)31)7-5-9-16(18)25-15/h4-12,19-21,23,27-29H,1-3H3,(H,30,31)/b11-10+/t12-,19-,20+,21+,23+/m0/s1