Using CN(C)C=O, CCOC(=O)c1c(OC)c2n(c1Br)[C@@H](C)CN(C(C)C)C2=O to produce CCOC(=O)c1c(OC)c2n(c1C#N)[C@@H](C)CN(C(C)C)C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.