Using COC(=O)CC1CC2CC(O)C(C1)N2C(=O)OCc1ccccc1 to produce COC(=O)CC1CC2CC(=O)C(C1)N2C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.