[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][/C][=C][\\C][=C][\\C][=C][\\C][=O]"}, {"from": "gpt", "value": "The molecule is a nona-2,4,6-trienal in which the double bonds at positions 2 and 4 adopt trans-configuration and the double bond at position 6 adopts cis-configuration. It has a role as a pheromone, an animal metabolite and a flavouring agent."}]