C[C@@H](N)S(=O)(=O)O    mol31685    0_1
C[C@@H]([NH3+])S(=O)(=O)[O-]    mol31685    0_2
C[C@@H]([NH3+])S(=O)(=O)O    mol31685    1_1
C[C@@H](N)S(=O)(=O)[O-]    mol31685    -1_1