Using COC(=O)c1ccc2c(c1)C(O)c1ccccc1CO2, O=S([O-])c1ccccc1 to produce COC(=O)c1ccc2c(c1)C(S(=O)(=O)c1ccccc1)c1ccccc1CO2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.