[{"from": "human", "value": "What can you tell me about this molecule? [C][C@@H1][C][C][C@@H1][C@][Ring1][Branch1][C][C][Branch1][O][C][C@H1][Ring1][Branch1][C][=C][Ring1][Branch2][C][=O][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is an enal that is pentalen-13-ol in which the primary hydroxy group hax been oxidised to the corresponding aldehyde. It is an enal and a sesquiterpenoid. It is functionally related to a pentalenene."}]