Using Cn1nc(C(F)(F)F)c(C(=O)O)c1Cl, Fc1ccc(S)cc1 to produce Cn1nc(C(F)(F)F)c(C(=O)O)c1Sc1ccc(F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.