[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@][C][C][C][=Branch1][C][=O][C][=C][Ring1][#Branch1][C][C][C@@H1][C@@H1][Ring1][O][C@H1][Branch2][Ring1][Branch2][C][C@][Branch2][Ring1][C][C@H1][Ring1][=Branch1][C][C][C@@][Ring1][Branch1][Branch1][#Branch1][C][=Branch1][C][=O][C][=O][O][C][O]"}, {"from": "gpt", "value": "The molecule is a C21-steroid that is cortisol in which the 21-hydroxy group has been oxidised to the corresponding aldehyde. It is a 21-oxo steroid, a 20-oxo steroid, a 3-oxo-Delta(4) steroid, an 11beta-hydroxy steroid, a 17alpha-hydroxy steroid, a C21-steroid, a steroid aldehyde and a tertiary alpha-hydroxy ketone. It is functionally related to a progesterone. It derives from a hydride of a 5alpha-pregnane."}]