InChI=1/C19H16N4O/c24-19(15-1-2-15)23-17-4-3-16(13-5-9-20-10-6-13)18(22-17)14-7-11-21-12-8-14/h3-12,15H,1-2H2,(H,22,23,24)/f/h23H CD52ACC88E7C6A3B