Using CCc1nc(-c2cccc(Br)c2)c(-c2ccnc(NC(=O)OC(C)(C)C)c2)s1, N#C[Cu]C#N to produce CCc1nc(-c2cccc(C#N)c2)c(-c2ccnc(N)c2)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.