Using CCCC1CC(=O)C2=C(C1)NC(C)=C(C#N)C2c1cc(Br)c(N)c([N+](=O)[O-])c1 to produce CCCC1CC(=O)C2=C(C1)NC(C)=C(C#N)C2c1cc(N)c(N)c(Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.