CC1(C)[C@H]2CC[C@](C(=O)O)(C2)[C@H]1O    mol32281    0_1
CC1(C)[C@H]2CC[C@](C(=O)[O-])(C2)[C@H]1O    mol32281    -1_1
CC1(C)[C@H]2CC[C@](C(=O)O)(C2)[C@H]1[O-]    mol32281    -1_2