Using CCCc1nc(C)cc(=O)n1Cc1ccc(-c2ccccc2C#N)c(F)c1, BrBr to produce CCCc1nc(C)c(Br)c(=O)n1Cc1ccc(-c2ccccc2C#N)c(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.