[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][=C][C][C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is one of a pair of phellandrene cyclic monoterpene double-bond isomers in which both double bonds are endocyclic (cf. alpha-phellandrene, where one of them is exocyclic). It has a role as a volatile oil component, a plant metabolite and an antimicrobial agent. It is a phellandrene and a cyclohexadiene."}]