Using CCOC(=O)[C@H]1O[C@@H]1C(=O)N[C@@H](Cc1cnc[nH]1)C(=O)Nc1ccccc1 to produce O=C(Nc1ccccc1)[C@H](Cc1c[nH]cn1)NC(=O)[C@H]1O[C@@H]1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.