[{"from": "human", "value": "What can you tell me about this molecule? [C][C][Branch1][=Branch1][C][=Branch1][C][=O][C][O]"}, {"from": "gpt", "value": "The molecule appears as a light-yellow colored liquid that can form a crystalline solid when it dimerizes. Slightly denser than water. Hence sinks in water. Used to make other chemicals."}]