Using O=C(CN(CCc1ccccc1)C(=O)CCc1ccccc1)OCc1ccccc1 to produce O=C(O)CN(CCc1ccccc1)C(=O)CCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.