[{"from": "human", "value": "Describe this molecule. [C][C][=C][Branch2][Ring1][=C][C][C][C@][Branch2][Ring1][#Branch1][C@H1][Ring1][=Branch1][C][C][C][=C][Ring1][=Branch1][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][Branch1][C][C][C][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is an abietane diterpenoid with formula C20H26O2, originally isolated from Tripterygium wilfordii. It has a role as a plant metabolite. It is an abietane diterpenoid, a carbotricyclic compound, an alpha,beta-unsaturated monocarboxylic acid and a tricyclic diterpenoid."}]