Using CCN(CC)c1ccc(S(N)(=O)=O)cc1, O=C=Nc1ccc(Cl)cc1 to produce CCN(CC)c1ccc(S(=O)(=O)NC(=O)Nc2ccc(Cl)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.