InChI=1S/C19H25F4NO3/c1-11(2)6-5-9-27-18(26)16(12(3)4)24-17(25)14-10-13(19(21,22)23)7-8-15(14)20/h7-8,10-12,16H,5-6,9H2,1-4H3,(H,24,25)