InChI=1S/C17H18F7NO3/c1-2-3-9-28-13(26)12(10-11-7-5-4-6-8-11)25-14(27)15(18,19)16(20,21)17(22,23)24/h4-8,12H,2-3,9-10H2,1H3,(H,25,27)