InChI=1S/C19H20N4O2/c1-25-17-6-9-21-18(12-17)22-16-7-10-23(11-8-16)19(24)15-4-2-14(13-20)3-5-15/h2-6,9,12,16H,7-8,10-11H2,1H3,(H,21,22)