[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a 2-methyl-3-hydroxybutyric acid that has (2S,3S)-configuration. It is a conjugate acid of a (2S,3S)-3-hydroxy-2-methylbutanoate."}, {"from": "gpt", "value": "[C][C@@H1][Branch1][=Branch1][C@H1][Branch1][C][C][O][C][=Branch1][C][=O][O]"}]