[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a hydroxy monocarboxylic acid anion resulting from the deprotonation of the carboxy group of (3R)-3-{[(3R)-3-{[(3R)-3-hydroxybutanoyl]oxy}butanoyl]oxy}butanoic acid. It is a trimer of (3R)-hydroxybutanoate; major microspecies at pH 7.3. It is functionally related to a (R)-3-hydroxybutyrate. It is a conjugate base of a (3R)-3-{[(3R)-3-{[(3R)-3-hydroxybutanoyl]oxy}butanoyl]oxy}butanoic acid."}, {"from": "gpt", "value": "[C][C@H1][Branch2][Ring1][O][C][C][=Branch1][C][=O][O][C@H1][Branch1][C][C][C][C][=Branch1][C][=O][O][C@H1][Branch1][C][C][C][C][=Branch1][C][=O][O-1][O]"}]