Using C[C@@H]1CN(S(=O)(=O)c2ccc(Cl)cc2)CCN1, O=C(Cl)c1ccccn1 to produce C[C@@H]1CN(S(=O)(=O)c2ccc(Cl)cc2)CCN1C(=O)c1ccccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.