C[C@@H](S)C(=O)O    mol9045    0_1
C[C@@H](S)C(=O)[O-]    mol9045    -1_1
C[C@@H]([S-])C(=O)O    mol9045    -1_2
C[C@@H]([S-])C(=O)[O-]    mol9045    -2_1