CC(CC(=O)O)(CC(=O)O)c1ccccc1 mol11670 0_1 CC(CC(=O)[O-])(CC(=O)O)c1ccccc1 mol11670 -1_1 CC(CC(=O)[O-])(CC(=O)[O-])c1ccccc1 mol11670 -2_1