[{"from": "human", "value": "Describe this molecule. [C][O][C][=C][Branch2][Ring1][Branch2][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][C][C][=Branch1][C][=O][N][C][C][C][=C][C][Ring1][=Branch1][=O][O][C]"}, {"from": "gpt", "value": "The molecule is a natural product found in Piper sintenense and Piper melanocladum with data available."}]