Using FC(F)(F)c1ccnc(Cl)n1, CC(C)(C)OC(=O)CC#N to produce CC(C)(C)OC(=O)C(C#N)=C1N=C(C(F)(F)F)C=CN1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.