Using CN(C)C=O, COc1ccc(Br)c(-c2nc(-c3ccccn3)no2)c1 to produce COc1ccc(C#N)c(-c2nc(-c3ccccn3)no2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.