[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][O][C][=C][Branch1][Ring2][O][Ring1][Branch1][C][=C][Branch1][Branch1][C][=C][Ring1][#Branch1][C][=O]"}, {"from": "gpt", "value": "The molecule is a natural product found in Piper retrofractum, Piper nigrum, and other organisms with data available."}]