InChI=1S/C19H18F2N2O/c1-22(2)19(24)23-12-14(16-11-15(20)8-9-17(16)21)10-18(23)13-6-4-3-5-7-13/h3-11,18H,12H2,1-2H3/t18-/m0/s1