Using CC(C)(Nc1ncc(-c2cc(Br)ccc2F)nn1)c1ccccc1F, CN(C)C=O to produce CC(C)(Nc1ncc(-c2cc(C#N)ccc2F)nn1)c1ccccc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.