[{"from": "human", "value": "Provide a description of this molecule. [C][C@@H1][C][C][=C][Branch1][#Branch2][C][C][C][=Branch1][C][=O][C][Ring1][#Branch1][C@@H1][C@@H1][Ring1][O][C@@H1][C][C][C@][Branch1][O][C@][Ring1][Branch1][Branch1][Branch1][C][C][Ring1][=Branch2][C][Branch1][Ring1][C][#C][O]"}, {"from": "gpt", "value": "The molecule is a synthetic estrogen used for treatment of symptoms of menopause and prevention of osteoporosis. Tibolone has been associated with rare instances of acute, clinically apparent liver injury."}]