Using COC(=O)c1nc(Br)c2c(cc(C)c(=O)n2Cc2ccccc2)c1O, N#C[Cu] to produce COC(=O)c1nc(C#N)c2c(cc(C)c(=O)n2Cc2ccccc2)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.