[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a (2R)-2-hydroxy monocarboxylic acid and a 2-hydroxy-3-methylpentanoic acid. It is a conjugate acid of a (2R,3R)-2-hydroxy-3-methylpentanoate."}, {"from": "gpt", "value": "[C][C][C@@H1][Branch1][C][C][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][O]"}]