Using CC(O)C1C(=O)c2ccccc2OC12CCN(C(=O)OC(C)(C)C)CC2 to produce CC(=O)C1C(=O)c2ccccc2OC12CCN(C(=O)OC(C)(C)C)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.