Using COC(=O)[C@@H](Cc1c[nH]cn1)NC(=O)C(CC(=O)c1ccco1)Cc1ccccc1 to produce O=C(CC(Cc1ccccc1)C(=O)N[C@H](Cc1c[nH]cn1)C(=O)O)c1ccco1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.