InChI=1/C20H21ClF4O2/c1-18(2,16-10-15(22)7-8-17(16)27-3)12-19(26,20(23,24)25)11-13-5-4-6-14(21)9-13/h4-10,26H,11-12H2,1-3H3/t19-/m0/s1 DEF72124BF68EE9A