InChI=1S/C20H17ClN4O4S2/c21-14-3-4-15-13(10-14)11-19(22-15)31(28,29)24-8-6-23(7-9-24)20(26)18-12-16-17(30-18)2-1-5-25(16)27/h1-5,10-12,22H,6-9H2