InChI=1/C20H20Cl2F4O2/c1-18(2,16-9-15(23)4-5-17(16)28-3)11-19(27,20(24,25)26)10-12-6-13(21)8-14(22)7-12/h4-9,27H,10-11H2,1-3H3/t19-/m1/s1 CE128B1CB3638225