Using Cc1ccc2c(c1)[C@H](N)[C@@H](C)C2, Nc1nc(Cl)ncc1Br to produce Cc1ccc2c(c1)[C@H](Nc1ncc(Br)c(N)n1)[C@@H](C)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.