Using CC(C)CC(C)Nc1ccc(C(=O)N[C@@H](CC(C)C)C(=O)OC(C)(C)C)cc1[N+](=O)[O-] to produce CC(C)CC(C)Nc1ccc(C(=O)N[C@@H](CC(C)C)C(=O)OC(C)(C)C)cc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.