Using [O-][Cl+][O-], CCOC(=O)c1[nH]c2cc(Cl)ccc2c1C=O to produce CCOC(=O)c1[nH]c2cc(Cl)ccc2c1C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.