InChI=1S/C24H18N4O/c1-2-4-23-18(3-1)5-8-20(27-23)16-29-21-9-6-19(7-10-21)24-22(15-26-28-24)17-11-13-25-14-12-17/h1-15H,16H2,(H,26,28)