Using CCOC(=O)[C@H](O)C[C@H](N)Cc1ccc(-c2ccccc2)cc1, CC(=O)c1cc(C(=O)O)[nH]n1 to produce CCOC(=O)[C@H](O)C[C@@H](Cc1ccc(-c2ccccc2)cc1)NC(=O)c1cc(C(C)=O)n[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.