Using COC(=O)c1ccc(C(F)(F)C(F)(F)F)c(F)c1C, C[S-] to produce COC(=O)c1ccc(C(F)(F)C(F)(F)F)c(SC)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.