InChI=1/C12H7ClN2O4S/c13-7-3-9-8(18-4-19-9)2-5(7)1-6-10(16)14-12(20)15-11(6)17/h1-3H,4H2,(H2,14,15,16,17,20)/p-1/fC12H6ClN2O4S/h14H/q-1/b6-1- C3DFA8F2043DA76B