InChI=1/C20H21ClF4O2/c1-18(2,15-10-14(22)8-9-17(15)27-3)12-19(26,20(23,24)25)11-13-6-4-5-7-16(13)21/h4-10,26H,11-12H2,1-3H3/t19-/m0/s1 35306CBEDB6D289D