[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][C@][C][C][=Branch1][C][=C][C@H1][C@H1][Branch1][=C][C@@H1][Ring1][#Branch1][C][C][C@][Ring1][#Branch2][Branch1][Ring1][C][#C][O][C][C][C][=C][C][C][C][C@H1][Ring1][P][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a third generation progestogen and hence, a member of the gonane family which was largely used in Europe before being approved in the US and Canada. It was firstly generated from a study that showed that 11-beta and 11-alkylidene substituent in nortestosterone can enhance the biological activity. Desogestrel is now produced semi-synthetically from naturally occurred plant steroids. In the US, desogestrel is found only in combination with [ethinyl estradiol]. The first approved drug containing desogestrel was developed by Organon USA Inc in 1972 and FDA approved in 1992."}]