[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a member of the class of furans that is furan in which the hydrogen at position 2 is replaced by a nonyl group. It has a role as a fungal metabolite, a volatile oil component and a flavouring agent."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][=C][C][=C][O][Ring1][Branch1]"}]