[{"from": "human", "value": "Describe this molecule. [C][O][C][=Branch1][C][=O][/C][=C][/C][=Branch2][Ring1][Ring2][=C][/C][=Branch1][C][=O][C][O][C][=Branch1][C][=O][C][=C][C][=C][C][=C][Ring1][=Branch1][/O]"}, {"from": "gpt", "value": "The molecule is a natural product found in Melodorum fruticosum and Uvaria siamensis with data available."}]