Using COC(=O)C(C)(C)COS(=O)(=O)c1ccc(C)cc1, O=Cc1cc(Br)ccc1O to produce COC(=O)C(C)(C)COc1ccc(Br)cc1C=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.