Using [O]N(S(=O)(=O)[O-])S(=O)(=O)[O-], CC(Oc1ccc(O)c2ccccc12)C(=O)O to produce CC(OC1=CC(=O)C(=O)c2ccccc21)C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.