Using COC(=O)[C@@H](Cc1ccccc1)Oc1c(Cl)cc(Br)cc1Cl, OB(O)c1cccc2c1oc1ccccc12 to produce COC(=O)[C@@H](Cc1ccccc1)Oc1c(Cl)cc(-c2cccc3c2oc2ccccc23)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.