InChI=1/C21H21F4NO2/c1-19(2,17-10-16(22)7-8-18(17)28-3)13-20(27,21(23,24)25)11-14-5-4-6-15(9-14)12-26/h4-10,27H,11,13H2,1-3H3/t20-/m0/s1 45879299ED18790C