Using O=C(O)[C@@H]1Cc2ccccc2N1C(=O)OCc1ccccc1, CCCCN to produce CCCCNC(=O)[C@@H]1Cc2ccccc2N1C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.