Using Cc1cc(C)c2c(=O)n(-c3ccccc3)c(=O)[nH]c2n1, BrCCCCBr to produce Cc1cc(C)c2c(=O)n(-c3ccccc3)c(=O)n(CCCCBr)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.