InChI=1S/C20H26F5NO3/c1-4-5-6-7-8-9-10-29-20(28)18(11(2)3)26-19(27)12-13(21)15(23)17(25)16(24)14(12)22/h11,18H,4-10H2,1-3H3,(H,26,27)