InChI=1/C20H17F4NO4/c1-10-3-5-14-12(9-27-18(14)11(10)2)7-17(26)25-15-6-4-13(28-19(21)22)8-16(15)29-20(23)24/h3-6,8-9,19-20H,7H2,1-2H3,(H,25,26)/f/h25H 7C0E250D2F79EB6D