InChI=1S/C18H23F4NO3/c1-3-4-5-6-7-10-26-17(25)12(2)23-16(24)14-9-8-13(19)11-15(14)18(20,21)22/h8-9,11-12H,3-7,10H2,1-2H3,(H,23,24)