Using COc1ccc(Br)cc1[C@H]1CN(Cc2ccccc2)CCO1, N#C[Cu]C#N to produce COc1ccc(C#N)cc1[C@H]1CN(Cc2ccccc2)CCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.