Using O=[N+]([O-])c1ccc2[nH]cc(CCO)c2c1, BrC(Br)(Br)Br to produce O=[N+]([O-])c1ccc2[nH]cc(CCBr)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.