[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy group to the amino group of L-propargylglycine. The major species at pH 7.3. It has a role as an antimicrobial agent. It is a tautomer of a L-propargylglycine."}, {"from": "gpt", "value": "[C][#C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}]