Using CN(C)C=O, CC(C)(C)c1[nH]nc(C(=O)O)c1[N+](=O)[O-] to produce CC(C)(C)c1[nH]nc(C(N)=O)c1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.