Using CC[C@@]1(O)C(=O)OCc2c1cc1n(c2=O)Cc2cc3c(N)cccc3nc2-1, Br to produce CC[C@@]1(O)C(=O)OCc2c1cc1n(c2=O)Cc2cc3c(Br)cccc3nc2-1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.