Using CC(O)C(=O)NCc1cc(C(=O)OC(C)(C)C)ccc1[N+](=O)[O-] to produce CC(O)C(=O)NCc1cc(C(=O)OC(C)(C)C)ccc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.