InChI=1/C21H23F3O4/c1-3-16(20(25)26)12-15-6-9-18(27-2)19(13-15)28-11-10-14-4-7-17(8-5-14)21(22,23)24/h4-9,13,16H,3,10-12H2,1-2H3,(H,25,26)/p-1/t16-/m0/s1/fC21H22F3O4/q-1 3CEF495F31D0E4AC