InChI=1/C21H18N4O/c1-14(2)20(26)25-21-23-18(15-9-5-3-6-10-15)17(13-22)19(24-21)16-11-7-4-8-12-16/h3-12,14H,1-2H3,(H,23,24,25,26)/f/h25H B7E60B3D821E05A5