Using FC(F)=C(F)F, FC(F)(F)c1cc(Cl)c(-n2cnc(S)n2)c(Cl)c1 to produce FC(F)C(F)(F)c1ncn(-c2c(Cl)cc(C(F)(F)F)cc2Cl)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.