Using COC(=O)[C@@H]1[C@@H](O)CCN1C(=O)OC(C)(C)C, O=C(O)c1ccccc1 to produce COC(=O)[C@@H]1[C@H](OC(=O)c2ccccc2)CCN1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.