Using C=C(CBr)c1ccccc1, Nc1cc([N+](=O)[O-])cc([N+](=O)[O-])c1 to produce C=C(Cc1cc([N+](=O)[O-])cc([N+](=O)[O-])c1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.