InChI=1S/C18H23F4NO3/c1-4-5-6-9-26-17(25)15(11(2)3)23-16(24)12-7-8-13(14(19)10-12)18(20,21)22/h7-8,10-11,15H,4-6,9H2,1-3H3,(H,23,24)