[{"from": "human", "value": "Please give me some details about this molecule. [C][C@][C][C][C@H1][C@H1][Branch2][Ring1][#Branch1][C@@H1][Ring1][=Branch1][C][C][C@@H1][Ring1][=Branch2][O][C][=Branch1][C][=O][C][C][C][C][C][C][C][Ring1][Branch1][C][C][C][=C][C][=Branch1][C][=O][C][C][C@][Ring2][Ring1][=Branch2][Ring1][#Branch1][C]"}, {"from": "gpt", "value": "The molecule is a synthetic derivative of testosterone in the form of an oil-soluble 17 (beta)-cyclopentylpropionate ester. Its benefit compared to other testosterone derivatives is the slow rate of release after injection and longer half-life. It was developed by the company Pharmacia and Upjohn and FDA approved on July 25, 1979."}]