InChI=1/C19H15FN2O/c20-16-9-6-13(7-10-16)15-8-11-17(21)18(12-15)22-19(23)14-4-2-1-3-5-14/h1-12H,21H2,(H,22,23)/f/h22H CA2B4DFA40F55E24