InChI=1/C18H14N4O2/c1-11-6-7-12(23)10-15(11)21-18-19-9-8-14(20-18)17-13-4-2-3-5-16(13)24-22-17/h2-10,23H,1H3,(H,19,20,21)/f/h21H E12CD1849FE9E7B2