Using COC(=O)[C@@H](N)CC(=O)OCc1ccccc1, CC(C)(C)OC(=O)NC(CC(=O)OCc1ccccc1)C(=O)O to produce COC(=O)C(CC(=O)OCc1ccccc1)NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.