O=C(O)CC(CC(=O)O)(c1ccccc1)c1ccccc1    mol12159    0_1
O=C([O-])CC(CC(=O)O)(c1ccccc1)c1ccccc1    mol12159    -1_1
O=C([O-])CC(CC(=O)[O-])(c1ccccc1)c1ccccc1    mol12159    -2_1