Using COC(=O)C(C(=O)OC(C)(C)C)c1ncc(C(F)(F)F)cc1C#N to produce CC(C)(C)OC(=O)C1C(=O)NCc2cc(C(F)(F)F)cnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.