Using CS(=O)(=O)Cc1ccc(Oc2ccc(C#N)c(C#N)c2)cc1, [Br-] to produce N#Cc1ccc(Oc2ccc(CBr)cc2)cc1C#N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.