[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][Branch2][Ring1][C][C][C][C][Branch1][Branch1][C][C][Ring1][=Branch1][C][Branch1][C][C][Branch1][C][C][O][O].[O]"}, {"from": "gpt", "value": "The molecule is an expectorant, commonly used to loosen mucus and ease congestion in patients presenting with acute or chronic bronchitis, and related pulmonary conditions. It is derived from sources such as turpentine, oregano, thyme and eucalyptus. It was popular in the United States since the late nineteenth century, but was removed from marketed medications in the 1990s after FDA stated that \"based on evidence currently available, there are inadequate data to establish general recognition of the safety and effectiveness of these ingredients\". Elixirs of terpin hydrate are still available to patients as prescription medications to be prepared by specialty compounding pharmacies."}]