Using O=C(O)c1ccc(S(=O)(=O)O)cc1C(=O)O, CC(C)[O-] to produce O=C([O-])c1cccc(S(=O)(=O)O)c1C(=O)[O-], please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.