Using [NH-]N, COC(=O)[C@@H](N)Cc1c[nH]c2ccc([N+](=O)[O-])cc12 to produce NC(=O)[C@@H](N)Cc1c[nH]c2ccc([N+](=O)[O-])cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.