InChI=1/C20H15FN2O/c1-24-16-5-6-17-18(12-16)23-20(14-3-2-4-15(21)11-14)19(17)13-7-9-22-10-8-13/h2-12,19H,1H3/t19-/m0/s1 74555F252B5D59FF