Using CCCC(CCC)N1CCc2c(C(=O)OC)cc(Br)cc2C1=O to produce CCCC(CCC)N1CCc2c(C(=O)OC)cc(-c3ccccc3C#N)cc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.