InChI=1/C21H22F4N2O2/c1-19(2,15-10-14(22)8-9-18(15)29-3)11-20(28,21(23,24)25)12-27-13-26-16-6-4-5-7-17(16)27/h4-10,13,28H,11-12H2,1-3H3/t20-/m1/s1 55B3808352B6708B