[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@H1][Branch1][#Branch2][C][C][/C][=C][Branch1][C][\\C][/C][=O][C@H1][C][C][C@@][Branch2][Ring2][#Branch1][C@@][Ring1][Branch1][Branch2][Ring1][S][C][C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][C][C@@H1][C@@][Ring1][#Branch1][Branch1][=C][C][C][C][=Branch1][C][=O][C][Ring1][#Branch1][Branch1][C][C][C][C][C][C]"}, {"from": "gpt", "value": "The molecule is a tetracyclic triterpenoid that is lanosta-8,24-dien-26-al substituted by oxo groups at positions 3 and 7. Isolated from Ganoderma lucidum and Ganoderma pfeifferi, it exhibits antiviral and cytotoxic activities. It has a role as a metabolite, an antineoplastic agent and an anti-HSV agent. It is a tetracyclic triterpenoid, a cyclic terpene ketone, a 3-oxo-5alpha-steroid, a 7-oxo steroid and a steroid aldehyde. It derives from a hydride of a lanostane."}]