Using O=Cc1ccc(O)cc1, COc1c(C(C)(C)C)cc(CBr)cc1C(C)(C)C to produce COc1c(C(C)(C)C)cc(COc2ccc(C=O)cc2)cc1C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.