Using Brc1ccc2ccc3c(Br)ccc4ccc1c2c43, OB(O)c1ccccc1 to produce Brc1ccc2ccc3c(-c4ccccc4)ccc4ccc1c2c43, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.