Using c1ccc(-c2noc(-c3cc4c(cn3)[nH]c3ccccc34)n2)cc1, ClCCCBr to produce ClCCCn1c2ccccc2c2cc(-c3nc(-c4ccccc4)no3)ncc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.