Using OCc1coc(-c2ccc(C(F)(F)F)cc2)c1, CCOC(=O)COc1ccc(S)cc1C to produce CCOC(=O)COc1ccc(SCc2coc(-c3ccc(C(F)(F)F)cc3)c2)cc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.