Using CC(Br)(CO)c1ccccc1, Oc1ccc(C2CCSc3ccccc32)cc1 to produce CC(CO)(Oc1ccc(C2CCSc3ccccc32)cc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.