Using Cn1ncc([N+](=O)[O-])c1C1=CCN(C(=O)OC(C)(C)C)CC1 to produce Cn1ncc(N)c1C1=CCN(C(=O)OC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.