CC(C)(C(=O)O)C(C)(C)C(=O)O    mol10469    0_1
CC(C)(C(=O)[O-])C(C)(C)C(=O)O    mol10469    -1_1
CC(C)(C(=O)[O-])C(C)(C)C(=O)[O-]    mol10469    -2_1