Using CN(C)C=O, CC(C)(C)OC(=O)N1CC[C@H](N(c2ccc(F)c(Cl)c2)c2cccc(Br)n2)C1 to produce CC(C)(C)OC(=O)N1CC[C@H](N(c2ccc(F)c(Cl)c2)c2cccc(C#N)n2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.