[{"from": "human", "value": "Describe this molecule. [C][C@][C][C][C@@H1][Branch2][Branch1][=N][C][Branch2][Branch1][Branch1][C@@H1][Ring1][=Branch1][C][C][C@@][Branch2][Ring2][O][C@@H1][Ring1][#Branch2][C][C][=C][C@][Ring1][=Branch1][Branch2][Ring1][=C][C][C@@H1][Branch2][Ring1][Branch2][C@@][Branch1][S][C@H1][Ring1][=Branch1][C][C][Branch1][Branch1][C][C][Ring1][=Branch1][Branch1][C][C][C][C][=Branch1][C][=O][O][O][C][C][Branch1][C][C][C][O]"}, {"from": "gpt", "value": "The molecule is a pentacyclic triterpenoid that is oleanane which has been substituted by hydroxy groups at the 3beta and 16beta positions, dehydrogenated to introduce a double bond at the 12-13 position, and in which the methyl substituent at position 17 has undergone oxidation to give the corresponding carboxylic acid. Found in the cactus Myrtillocactus cochal. It has a role as a plant metabolite. It is a pentacyclic triterpenoid, a monocarboxylic acid, a secondary alcohol and a hydroxy carboxylic acid. It is a conjugate acid of a cochalate. It derives from a hydride of an oleanane."}]