Using FC(F)=C(F)F, FC(F)(F)c1cccc(-c2nnc(S)o2)c1 to produce FC(F)C(F)(F)Sc1nnc(-c2cccc(C(F)(F)F)c2)o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.