[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is an ammonium ion resulting from the protonation of the amino group of L-homoserine lactone. The major species at pH 7.3. It is a conjugate acid of a L-homoserine lactone."}, {"from": "gpt", "value": "[C][C][O][C][=Branch1][C][=O][C@H1][Ring1][=Branch1][NH3+1]"}]