CC[C@H](C(=O)O)C(CC)(CC)C(=O)O    mol32974    0_1
CC[C@H](C(=O)O)C(CC)(CC)C(=O)[O-]    mol32974    -1_1
CC[C@H](C(=O)[O-])C(CC)(CC)C(=O)O    mol32974    -1_2