Using CS(=O)(=O)c1ccc(-n2cncc2-c2ccccc2)cn1, O=C1CCC(=O)N1Cl to produce CS(=O)(=O)c1ccc(-n2cnc(Cl)c2-c2ccccc2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.