InChI=1S/C21H20FNO4/c22-14-7-5-13(6-8-14)21-17-3-1-2-4-18(17)23-19(21)10-9-15(24)11-16(25)12-20(26)27/h1-10,15-16,23-25H,11-12H2,(H,26,27)/b10-9+/t15-,16-/m0/s1