InChI=1/C16H14F2N2O/c1-9(2)20-15-8-11(4-6-14(15)19-16(20)21)10-3-5-12(17)13(18)7-10/h3-9H,1-2H3,(H,19,21)/f/h21H 2230F3113C1A2087