[{"from": "human", "value": "Please give me some details about this molecule. [C][S@@][=Branch1][C][=O][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}, {"from": "gpt", "value": "The molecule is the (R)-oxido diastereomer of L-methionine S-oxide. It has a role as an Escherichia coli metabolite. It is an enantiomer of a D-methionine (S)-S-oxide. It is a tautomer of a L-methionine (R)-S-oxide zwitterion."}]