[{"from": "human", "value": "Describe this molecule. [C][/C][=C][/S][/C][=C][/C]"}, {"from": "gpt", "value": "The molecule is an organic sulfide that is hydrogen sulfide substituted by two prop-1-en-1-yl groups. It is a volatile constituent found in garlic and onions. It has a role as a flavouring agent and a volatile oil component. It is an organic sulfide and an olefinic compound."}]