Using O=C(Cl)c1cc(F)c(F)c(F)c1F, CC(C)(C)OC(=O)CC#N to produce CC(C)(C)OC(=O)C(C#N)C(=O)c1cc(F)c(F)c(F)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.