Using COc1ccc(N2CCN(C(=O)OC(C)(C)C)CC2)cc1[N+](=O)[O-] to produce COc1ccc(N2CCN(C(=O)OC(C)(C)C)CC2)cc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.