Using COC(=O)C=Cc1ccc(C(=O)NC[C@H](NC(=O)OCc2ccccc2)C(=O)OC(C)(C)C)s1 to produce COC(=O)CCc1ccc(C(=O)NC[C@H](N)C(=O)OC(C)(C)C)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.