[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a propenol in which the C=C bond connects C-2 and C-3. It is has been found in garlic (Allium sativum). Formerly used as a herbicide for the control of various grass and weed seeds. It has a role as an insecticide, a herbicide, an antibacterial agent, a fungicide and a plant metabolite. It is a primary allylic alcohol and a propenol."}, {"from": "gpt", "value": "[C][=C][C][O]"}]