Using COC(=O)[C@@H]1CCCN1C(=O)CC(c1ccccc1)c1ccccc1 to produce O=C(O)[C@@H]1CCCN1C(=O)CC(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.