InChI=1S/C19H16ClF3O5/c1-3-26-17(24)11(2)27-18(25)15-10-14(8-9-16(15)20)28-13-6-4-12(5-7-13)19(21,22)23/h4-11H,3H2,1-2H3/t11-/m1/s1