InChI=1/C21H20F3NO4/c1-19(2,14-6-4-3-5-7-14)12-20(28,21(22,23)24)18(27)25-15-8-9-16-13(10-15)11-29-17(16)26/h3-10,28H,11-12H2,1-2H3,(H,25,27)/t20-/m0/s1/f/h25H E3C13BFA843A5359