InChI=1S/C22H26N4O8/c23-19(24)11-5-2-9(3-6-11)1-4-10-7-8-12(20(25)26)17(13(10)27)33-22-16(30)14(28)15(29)18(34-22)21(31)32/h1-8,12,14-18,22,28-30H,23-24H2,(H3,25,26)(H,31,32)/b10-4+