InChI=1S/C24H28N2O7/c1-32-21-13-16(5-8-18(21)27)6-9-23(30)25-11-3-4-12-26-24(31)10-7-17-14-22(33-2)20(29)15-19(17)28/h5-10,13-15,27-29H,3-4,11-12H2,1-2H3,(H,25,30)(H,26,31)/b9-6+,10-7?