Using CCc1ccc(-c2nc3ccccc3o2)c(F)c1, O=C1CCC(=O)N1Br to produce CC(Br)c1ccc(-c2nc3ccccc3o2)c(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.