InChI=1S/C19H14Cl2N2O4S/c1-28(26,27)11-5-6-12(14(21)10-11)19(25)23-16-8-7-13(20)17(18(16)24)15-4-2-3-9-22-15/h2-10,24H,1H3,(H,23,25)