Using CC(=O)Nc1c([N+](=O)[O-])cc(Br)c2c1CCN(C)C2 to produce CN1CCc2c(N)c([N+](=O)[O-])cc(Br)c2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.