InChI=1S/C21H23FN2O5/c1-14(19(26)12-22)23-20(27)18(11-15-7-9-17(25)10-8-15)24-21(28)29-13-16-5-3-2-4-6-16/h2-10,14,18,25H,11-13H2,1H3,(H,23,27)(H,24,28)/t14-,18-/m0/s1