InChI=1S/C19H16N6O/c20-10-12-22-18(26)14-3-1-13(2-4-14)17-9-11-23-19(25-17)24-16-7-5-15(21)6-8-16/h1-9,11H,12,21H2,(H,22,26)(H,23,24,25)