Using FC(F)(F)c1cc(Br)c2cccc(C(F)(F)F)c2n1, [Cl-] to produce FC(F)(F)c1cccc2c(Br)cc(C(Cl)(Cl)Cl)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.