[{"from": "human", "value": "Could you provide a description of this molecule? [C][C@H1][Branch1][#C][C][C][C][C][Branch1][Ring2][O][Ring1][Ring1][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 5alpha-lanosta-8-ene with an epoxy group across positions 24 and 25, a hydroxy group at position 26 and oxo groups at positions 3 and 7. Isolated from the fruiting bodies of Ganoderma pfeifferi, it exhibits antiviral activity against influenza A virus. It has a role as a metabolite and an EC 3.2.1.18 (exo-alpha-sialidase) inhibitor. It is a diketone, a primary alcohol, a tetracyclic triterpenoid and an epoxide. It derives from a hydride of a lanostane."}]