InChI=1S/C20H18N4O2/c25-16-4-5-18(15(12-16)13-20-23-8-9-24-20)26-17-3-1-2-14(10-17)11-19-21-6-7-22-19/h1-10,12,25H,11,13H2,(H,21,22)(H,23,24)