[{"from": "human", "value": "Could you provide a description of this molecule? [C][C@@][C][C@H1][Branch2][=Branch1][Ring2][C@@H1][Branch2][Ring2][O][C@][Ring1][Branch1][Branch2][Ring2][Ring2][C][C][=Branch1][C][=O][C@@][Branch2][Ring1][#Branch2][C@H1][Ring1][#Branch2][C][C][=C][C@H1][Ring1][=Branch1][C][C@@H1][Branch1][N][C][=Branch1][C][=O][C][Ring1][#Branch1][Branch1][C][C][C][O][C][C][C@][Branch1][C][C][Branch1][#C][C][=Branch1][C][=O][/C][=C][/C][Branch1][C][C][Branch1][C][C][O][O][O]"}, {"from": "gpt", "value": "The molecule is a cucurbitacin in which a lanostane skeleton is multi-substituted with hydroxy, methyl and oxo substituents, with unsaturation at positions 5 and 23. It is a cucurbitacin, a secondary alpha-hydroxy ketone and a tertiary alpha-hydroxy ketone. It derives from a hydride of a lanostane."}]