Using NCCCc1ccccc1Br, COC(=O)c1ccc2nc(-c3ccccc3)c(Cl)nc2c1 to produce COC(=O)c1ccc2nc(-c3ccccc3)c(NCCCc3ccccc3Br)nc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.