InChI=1S/C20H19ClFNO9/c21-9-5-10(22)11(23-17(27)7-3-1-2-4-8(7)18(23)28)6-12(9)31-20-15(26)13(24)14(25)16(32-20)19(29)30/h5-6,13-16,20,24-26H,1-4H2,(H,29,30)