Using Brc1ccc2cc(Br)ccc2c1, OB(O)c1ccc2ccc3cccc4ccc1c2c34 to produce Brc1ccc2cc(-c3ccc4ccc5cccc6ccc3c4c56)ccc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.