Task: Please generate a molecule SMILES based on the text description.
Description: The molecule is an amino acid zwitterion arising from transfer of a proton from the carboxy to the amino group of L-homocysteine; major species at pH 7.3. It has a role as a fundamental metabolite. It is a tautomer of a L-homocysteine.
Result: [NH3+][C@@H](CCS)C(=O)[O-]
Task: Please {#give me|create|generate!} a {#molecule |!}{SMILES__description} based on the {#text |!}description{# below|!}.
Description: {description#}
Result: {SMILES#}
[NH3+][C@@H](CCS)C(=O)[O-]
(2S)-2-azaniumyl-4-sulfanylbutanoate
The molecule is an amino acid zwitterion arising from transfer of a proton from the carboxy to the amino group of L-homocysteine; major species at pH 7.3. It has a role as a fundamental metabolite. It is a tautomer of a L-homocysteine.