InChI=1S/C22H26N4O8/c23-18(24)12-5-2-10(3-6-12)1-4-11-7-8-22(21(25)26,9-13(11)27)34-20-16(30)14(28)15(29)17(33-20)19(31)32/h1-8,14-17,20,28-30H,9,23-24H2,(H3,25,26)(H,31,32)/b11-4+