Using O=Cc1ccc(OCc2ccccc2)c(Br)c1, CCOc1ccc(Br)cc1 to produce CCOc1ccc(C(O)c2ccc(OCc3ccccc3)c(Br)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.