[{"from": "human", "value": "Describe this molecule. [C][C][=Branch2][Ring1][Branch1][=C][C][C][C@][Branch1][=C][C][C][C][C][=Branch1][C][=C][C@@H1][Ring1][#Branch1][C][Ring1][O][C][C]"}, {"from": "gpt", "value": "The molecule is a bicyclic sesquiterpene that is 1-methylidenedecahydronaphthalene carrying additional methyl and isopropylidene substituents at positions 4a and 7 respectively. It has a role as a plant metabolite. It is a sesquiterpene, a carbobicyclic compound and a polycyclic olefin. It derives from a hydride of a eudesmane."}]