Using Cc1ccc(S(=O)(=O)NC2Cc3ccccc3C2)cc1, O=C(Cl)CCl to produce Cc1ccc(S(=O)(=O)NC2Cc3ccc(C(=O)CCl)cc3C2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.