Using O=Cc1cc(OCc2ccccc2)ccc1O, CCOC(=O)C(C)(C)Br to produce CCOC(=O)C(C)(C)Oc1ccc(OCc2ccccc2)cc1C=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.