Using OB(O)c1cccnc1, CN1C(=O)Cc2c1ccc(Br)c2OCc1ccccc1 to produce CN1C(=O)Cc2c1ccc(-c1cccnc1)c2OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.