Using CC1(C)OB(c2cncc(C=O)c2)OC1(C)C, COc1cc(Br)ccc1C#N to produce COc1cc(-c2cncc(C=O)c2)ccc1C#N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.