InChI=1/C20H21N5O4/c1-20(2,3)15-11-16(25-29-15)24-19(28)23-13-8-6-12(7-9-13)22-18(27)17-14(26)5-4-10-21-17/h4-11,26H,1-3H3,(H,22,27)(H2,23,24,25,28)/p-1/fC20H20N5O4/h26h,22-24H/q-1 501CED20E9A3F558