Using C[C@@](O)(C(=O)Nc1ccc(I)cc1Cl)C(F)(F)F, Fc1ccccc1S to produce C[C@@](O)(C(=O)Nc1ccc(Sc2ccccc2F)cc1Cl)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.