[{"from": "human", "value": "Generate a molecule based on this description. The molecule is an octene that is octane containing one double bond at position 2. It has a role as a mammalian metabolite and a human metabolite. It is an octene and a volatile organic compound."}, {"from": "gpt", "value": "[C][C][C][C][C][/C][=C][/C]"}]