[{"from": "human", "value": "Provide a description of this molecule. [C][C@][C][C][C][C][Branch2][Ring2][=C][C@@H1][Ring1][=Branch1][C][C][C@@][Branch2][Ring2][Ring2][C@@H1][Ring1][#Branch2][C][C][C@H1][C@][Ring1][=Branch1][Branch2][Ring1][#Branch1][C][C][C@@H1][C@@][Ring1][=Branch1][Branch1][=C][C][C][C@@H1][Branch1][Branch2][C][Ring1][=Branch1][Branch1][C][C][C][O][C][C][C][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is a pentacyclic triterpenoid having a 3beta- (21alpha-) hydroxy-substituted gammacerane structure. It derives from a hydride of a gammacerane."}]