Using COc1cc2nccc(Cl)c2cc1OC, Oc1ccc2cc(Br)ccc2c1Br to produce COc1cc2nccc(Oc3ccc4cc(Br)ccc4c3Br)c2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.