InChI=1/C21H20N4O/c1-14-6-4-7-15(2)20(14)24-21-19-11-22-13-25(19)18(12-23-21)16-8-5-9-17(10-16)26-3/h4-13H,1-3H3,(H,23,24)/f/h24H 667BCC5AEC3E2915