Using O=S([O-])S(=O)(=O)[O-], CC(=O)c1ccc2c(c1)C(C)(C)CCO2 to produce CC1(C)CCOc2ccc(C(=O)O)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.