InChI=1/C21H18N4O2/c1-13-4-2-5-16(12-13)24-21(26)23-15-10-8-14(9-11-15)17-6-3-7-18-19(17)20(22)25-27-18/h2-12H,1H3,(H2,22,25)(H2,23,24,26)/f/h23-24H,22H2 2900324695A3CECB