CC1(C)[C@H](C(=O)[O-])CC[C@]1(C)C(=O)O    mol32992    -1_1
CC1(C)[C@H](C(=O)O)CC[C@]1(C)C(=O)[O-]    mol32992    -1_2
CC1(C)[C@H](C(=O)[O-])CC[C@]1(C)C(=O)[O-]    mol32992    -2_1