[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a 2-oxo monocarboxylic acid. It is functionally related to a pyruvic acid."}, {"from": "gpt", "value": "[C][O][C][=Branch1][O][=C][Branch1][=Branch1][C][=Branch1][C][=O][O][O][C][C][=C][C][=C][C][=C][Ring1][=Branch1]"}]