InChI=1S/C23H22FNO4/c1-27-19-12-13-21(28-2)17(14-19)16-25(23(26)15-24)20-10-6-7-11-22(20)29-18-8-4-3-5-9-18/h3-14H,15-16H2,1-2H3/i24-1