Using COC(=O)c1ccccc1C1CCCN(CCc2ccccc2N2CCCCC2=O)C1 to produce O=C(O)c1ccccc1C1CCCN(CCc2ccccc2N2CCCCC2=O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.