Using CC(=O)C(C(=O)OC(C)(C)C)C(=O)C1CCCN1C(=O)OCc1ccccc1 to produce CC(=O)CC(=O)C1CCCN1C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.