Using Ic1c2ccccc2c(-c2ccccc2)c2ccccc12, OB(O)c1ccc(Br)cc1 to produce Brc1ccc(-c2c3ccccc3c(-c3ccccc3)c3ccccc23)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.