Using BrBr, Cc1c(-c2ccc(OC(F)(F)C(F)Br)cc2)csc1-c1nc(-c2c(F)cccc2Cl)nn1C to produce Cc1c(-c2nc(-c3c(F)cccc3Cl)nn2C)sc(Br)c1-c1ccc(OC(F)(F)C(F)Br)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.