InChI=1/C15H13ClN2O4S/c1-8(2)14-10-7-9(16)3-4-11(10)22-15(14)23(20,21)13-6-5-12(19)17-18-13/h3-8H,1-2H3,(H,17,19)/f/h17H D3C854F51D8322B2