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