InChI=1S/C19H15N5O/c1-2-18(25)23-14-4-6-17-15(10-14)19(22-11-21-17)24-13-3-5-16-12(9-13)7-8-20-16/h2-11,20H,1H2,(H,23,25)(H,21,22,24)