Using O=C(c1ncc[nH]1)C(F)(F)F, O=C1CC(Cl)Sc2sccc21 to produce O=C1CC(Cl)Sc2scc(C(=O)C(F)(F)F)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.