InChI=1S/C22H28N4O7/c23-19(24)12-5-2-10(3-6-12)1-4-11-7-8-13(20(25)26)9-14(11)32-22-17(29)15(27)16(28)18(33-22)21(30)31/h1-8,13-18,22,27-29H,9,23-24H2,(H3,25,26)(H,30,31)/b11-4+