InChI=1S/C20H18N4O/c25-12-11-21-19-17-16(14-7-3-1-4-8-14)18(15-9-5-2-6-10-15)24-20(17)23-13-22-19/h1-10,13,25H,11-12H2,(H2,21,22,23,24)