Using CN1CC=C(C(C)(C)c2ccc([N+](=O)[O-])cc2Br)CC1 to produce CN1C=CC2=C(C1)c1cc([N+](=O)[O-])ccc1C2(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.