[{"from": "human", "value": "Could you provide a description of this molecule? [C][C@H1][Branch1][=Branch2][C][C][C][=C][Branch1][C][C][C][C@H1][C][C][C@@H1][C@@][Ring1][Branch1][Branch2][Ring1][=C][C][C][C][=C][Ring1][=Branch1][C][C][C@@H1][C@@][Ring1][=Branch1][Branch1][#C][C][C][C][=Branch1][C][=O][C][Ring1][#Branch1][C][=Branch1][C][=O][O][C][C]"}, {"from": "gpt", "value": "The molecule is a 3-oxo steroid, the structure of which is that of zymosterol, carboxy-substituted at C-4, and in which the 3-hydroxy function has been oxidised to an oxo group. It is functionally related to a zymosterol. It is a conjugate acid of a 3-dehydro-4-carboxyzymosterol(1-)."}]