Using CC(C)(C)OC(=O)c1ccc(CCBr)cc1, N#CC1=CCCC1=O to produce CC(C)(C)OC(=O)c1ccc(CCC2CCC(=O)C2C#N)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.