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