InChI=1S/C15H9ClFNO7S/c16-10-5-9(25-26(22,23)24)6-11(17)14(10)18-12-2-1-7(15(20)21)3-8(12)4-13(18)19/h1-3,5-6H,4H2,(H,20,21)(H,22,23,24)