Using CC1(C)OB(c2cccc(CC#N)c2)OC1(C)C, COc1ccc(Cn2nc(C)c3cc(Br)cnc32)cc1 to produce COc1ccc(Cn2nc(C)c3cc(-c4cccc(CC#N)c4)cnc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.