Using COC(=O)c1ccc2c(c1)C(S(C)(=O)=O)c1ccccc1CO2 to produce CS(=O)(=O)C1c2ccccc2COc2ccc(C(=O)O)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.