[{"from": "human", "value": "Provide a description of this molecule. [C][C@H1][Branch1][=Branch2][C][C][C][=C][Branch1][C][C][C][C@H1][C][C][C@@][Branch2][Ring2][#Branch1][C@@][Ring1][Branch1][Branch2][Ring1][S][C][C][C@][C@H1][Ring1][=Branch1][C][C][C@@H1][C@][Ring1][=Branch1][Branch1][Ring2][C][Ring1][#Branch1][C][C][C@@H1][Branch1][=Branch2][C@@][Ring1][#Branch1][Branch1][C][C][C][O][O][C][C]"}, {"from": "gpt", "value": "The molecule is a pentacyclic triterpenod that is 9beta,19-cyclolanost-24-ene which is substituted by hydroxy groups at the 3beta and 28 positions. It is a pentacyclic triterpenoid, a member of phytosterols and a 3beta-hydroxy-4alpha-hydroxymethyl-4beta-methylsteroid. It derives from a hydride of a lanostane."}]