Using C=CCBr, FC(F)(F)c1cnc(CNC(=S)c2ccccc2Cl)c(Cl)c1 to produce C=CCSC(=NCc1ncc(C(F)(F)F)cc1Cl)c1ccccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.