[{"from": "human", "value": "Describe this molecule. [C][C@@H1][C][C][=Branch1][C][=O][C][=C][C@][Ring1][#Branch1][Branch1][=C][C][C@@H1][Branch1][Branch1][C][C][Ring1][=Branch1][C][=Branch1][C][=C][C][C]"}, {"from": "gpt", "value": "The molecule is a sesquiterpenoid that is 4,4a,5,6,7,8-hexahydronaphthalen-2(3H)-one which is substituted by methyl groups at positions 4 and 4a, and by an isopropenyl group at position 6 (the 4R,4aS,6R stereoisomer). It has a role as a plant metabolite, a fragrance and an insect repellent. It is a sesquiterpenoid, an enone and a carbobicyclic compound."}]