[{"from": "human", "value": "What can you tell me about this molecule? [C][=C][C][C][#N]"}, {"from": "gpt", "value": "The molecule is an aliphatic nitrile that is hydrogen cyanide in which the hydrogen has been replaced by an allyl group. It has a role as a neurotoxin, a plant metabolite and an antifeedant. It is an aliphatic nitrile and an olefinic compound."}]