InChI=1/C21H25F4NO2/c1-13-6-7-16(22)8-17(13)19(4,5)11-20(28,21(23,24)25)12-26-9-14(2)18(27)15(3)10-26/h6-10,28H,11-12H2,1-5H3/t20-/m1/s1 1C8424BD00E6FC8F