[{"from": "human", "value": "Generate a molecule based on this description. The molecule appears as a colorless to yellow odorless syrupy liquid. Corrosive to metals and tissue. Used to make cultured dairy products, as a food preservative, and to make chemicals."}, {"from": "gpt", "value": "[C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][O]"}]