Using CCC#CCN1C(=O)C(C)(C)c2cc(N)c([N+](=O)[O-])cc21 to produce CCC#CCN1C(=O)C(C)(C)c2cc(N)c(N)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.