[{"from": "human", "value": "Generate a molecule based on this description. The molecule is the D-enantiomer of methioninium. It has a role as an Escherichia coli metabolite and a Saccharomyces cerevisiae metabolite. It is a conjugate acid of a D-methionine. It is an enantiomer of a L-methioninium."}, {"from": "gpt", "value": "[C][S][C][C][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][NH3+1]"}]