[{"from": "human", "value": "Describe this molecule. [C][C@@][Branch2][Ring1][=C][C][C][C@@H1][C][=Branch2][Ring1][Ring2][=C][C][C@@H1][C@@][Ring1][=Branch1][Branch1][O][C][C][C][C][Ring1][=Branch1][Branch1][C][C][C][C][C][Ring1][P][C][=C]"}, {"from": "gpt", "value": "The molecule is a carbotricyclic compound that is isopimarane with double bonds introduced at the 7-8 and 15-16 positions and in which the hydrogen at position 9 is beta instead of alpha. It is a diterpene and a carbotricyclic compound. It derives from a hydride of an isopimarane."}]