[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][/C][=C][/C][=C][/C][=O]"}, {"from": "gpt", "value": "The molecule is a heptadienal in which the two double bonds are located at positions 2 and 4 (the E,E-geoisomer). It has a role as a flavouring agent."}]