Using Nc1c(C(=O)O)cc(Br)cc1[N+](=O)[O-], CNOC to produce CON(C)C(=O)c1cc(Br)cc([N+](=O)[O-])c1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.