Question: Please describe this drug.
 The Chemical can be represented with the SMILES C[S+](C)CC[C@H](N)C(=O)[O-].
Answer: A vitamin found in green vegetables. It is used in the treatment of peptic ulcers, colitis, and gastritis and has an effect on secretory, acid-forming, and enzymatic functions of the intestinal tract.
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
C[S+](C)CC[C@H](N)C(=O)[O-]
C[S+](C)CC[C@@H](C(=O)[O-])N
(2S)-2-amino-4-dimethylsulfoniobutanoate
Please describe this drug.