Using Cc1cc(N)c(F)cc1S, FC(F)(F)c1ccc(Cl)c(Cl)c1 to produce Cc1cc(N)c(F)cc1Sc1ccc(C(F)(F)F)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.