[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is an L-alpha-amino acid zwitterion that is the dizwitterionic form of L-homolanthionine obtained by migration of protons from both carboxy groups to the amino groups; major species at pH 7.3. It is functionally related to a L-homocysteine zwitterion. It is a tautomer of a L-homolanthionine."}, {"from": "gpt", "value": "[C][Branch1][=C][C][S][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}]