[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][Branch1][C][C][C][=C][C][C][=C][Branch1][Ring2][C][Ring1][=Branch1][C][C][C@@H1][C@@][Ring1][#Branch1][Branch1][O][C][C][C][C][Ring1][=Branch1][Branch1][C][C][C][C]"}, {"from": "gpt", "value": "The molecule is an abietadiene in which the two doule bonds are located at positions 8 and 12. It is a key intermediate in the biosynthesis of many important natural diterpene compounds such as triptolide, tanshinones, carnosic acid and carnosol. It has a role as a plant metabolite. It is an abietadiene and a carbotricyclic compound."}]