Using CC(C)(C)C(=O)On1nc(-c2ccc[nH]2)c2cc([N+](=O)[O-])ccc21 to produce CC(C)(C)C(=O)On1nc(-c2ccc[nH]2)c2cc(N)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.