Using BrBr, N#Cc1[nH]c(-c2ccc(Cl)cc2)cc1-c1ccc(Cl)cc1 to produce N#Cc1[nH]c(-c2ccc(Cl)cc2)c(Br)c1-c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.