[{"from": "human", "value": "Describe this molecule. [C][C][=C][C][C][Branch1][Branch2][C][Ring1][Branch1][Branch1][C][C][C][C][C][#N]"}, {"from": "gpt", "value": "The molecule is a nitrile that is acetonitrile in which one of the hydrogens has been replaced by a 2,2,3-trimethylcyclopent-3-en-1-yl group. A powerful fragrance compound with pine, rosemary and hay-like tonalities. It has a role as a fragrance. It is a nitrile and a volatile organic compound. It derives from a hydride of a cyclopentene."}]