InChI=1/C20H18N4O2/c1-12(14-7-4-5-9-17(14)25)21-24-20(26)19-16-11-10-13-6-2-3-8-15(13)18(16)22-23-19/h2-9,25H,10-11H2,1H3,(H,22,23)(H,24,26)/b21-12+/f/h22,24H E9C7C871FF9EB25F