Using CC(C)(C)OC(=O)c1ccc(Br)cc1[N+](=O)[O-], C=CCc1ccccc1 to produce CC(C)(C)OC(=O)c1ccc(C=CCc2ccccc2)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.