InChI=1/C20H16F4N2O2/c1-12(9-13-5-4-6-14(21)10-13)18(27)15(11-25)19(28)26-17-8-3-2-7-16(17)20(22,23)24/h2-8,10,12,26,28H,9H2,1H3/p-1/b19-15+/t12-/m1/s1/fC20H15F4N2O2/h28h/q-1 CB5D4AD7DF682468