InChI=1/C20H22N4O4/c1-23(2)8-7-21-11-3-4-12-16-15(11)20(28)18-14(27)6-5-13(26)17(18)19(16)22-24(12)9-10-25/h3-6,21,25-27H,7-10H2,1-2H3/p+1/fC20H23N4O4/h23H/q+1 7248FE252F02B093