Using OB(O)c1cc2ccccc2o1, Nc1ccc(Br)c2c1C(=O)NC2=O to produce Nc1ccc(-c2cc3ccccc3o2)c2c1C(=O)NC2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.