Using BrBr, O=[N+]([O-])c1cc(SC(F)(F)F)[nH]c1-c1ccc(Cl)cc1 to produce O=[N+]([O-])c1c(-c2ccc(Cl)cc2)[nH]c(SC(F)(F)F)c1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.