[{"from": "human", "value": "Please give me some details about this molecule. [C][C][Branch1][C][C][C][C][C][C][=Branch1][C][=C][C][=C][Ring1][#Branch1]"}, {"from": "gpt", "value": "The molecule is one of a pair of phellandrene cyclic monoterpene double-bond isomers in which one double bond is exocyclic (cf. alpha-phellandrene, where both of them are endoocyclic). It has a role as a plant metabolite."}]