Using COC(=O)c1nc[nH]n1, O=[N+]([O-])c1ccc(CBr)cc1 to produce COC(=O)c1ncnn1Cc1ccc([N+](=O)[O-])cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.