InChI=1S/C20H19FN2O6/c1-2-27-12-11-20(17(24)22-19(26)23-18(20)25)29-16-9-7-15(8-10-16)28-14-5-3-13(21)4-6-14/h3-10H,2,11-12H2,1H3,(H2,22,23,24,25,26)