InChI=1/C21H28N4O4/c1-24(16-17-7-4-3-5-8-17)13-6-11-23-21(26)18-9-10-19(22-12-14-29-2)20(15-18)25(27)28/h3-5,7-10,15,22H,6,11-14,16H2,1-2H3,(H,23,26)/p+1/fC21H29N4O4/h23-24H/q+1 DBB0A57DA39D94A2