Using CCN(CC)CC, O=C(O)c1cc2ccccc2c(-c2ccc(Cl)cc2)n1 to produce CCN(CC)C(=O)c1cc2ccccc2c(-c2ccc(Cl)cc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.