[{"from": "human", "value": "Could you provide a description of this molecule? [C][C@@H1][C][C][C@@][Branch2][Branch1][=N][C][C][C@@][Branch2][Branch1][=Branch1][C][=Branch2][Ring2][=Branch2][=C][C][C@H1][C@][Ring1][=Branch1][Branch2][Ring1][#C][C][C][C@@H1][C@@][Ring1][=Branch1][Branch2][Ring1][Branch1][C@@H1][Branch1][P][C@H1][Branch1][=N][C@H1][Branch1][=Branch2][C@@][Ring1][=Branch1][Branch1][C][C][C][O][O][O][O][C][C][C@@H1][Ring2][Ring1][#Branch2][C@H1][Ring2][Ring1][=C][C][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a pentacyclic triterpenoid that is urs-12-ene substituted by hydroxy groups at positions 1, 2, 3 and 23 and a carboxy group at position 28 (the 1beta,2alpha,3alpha stereoisomer). Isolated from Weigela subsessilis, it exhibits anticomplement activity against complement induced hemolysis. It has a role as a metabolite. It is a pentacyclic triterpenoid, a monocarboxylic acid and a tetrol. It derives from a hydride of an ursane."}]