[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a natural product found in Sargassum siliquastrum with data available."}, {"from": "gpt", "value": "[C][C][=C][C][=Branch2][Ring2][P][=C][C][=C][Ring1][=Branch1][O][C@][Branch1][Branch1][C][C][Ring1][=Branch1][Branch1][C][C][C][C][C][C@@][Branch1][C][C][Branch2][Ring1][=Branch1][C][C][/C][=C][Branch1][C][\\C][/C@@H1][Branch1][O][C@H1][Branch1][#Branch1][C][=C][Branch1][C][C][C][O][O][O][O]"}]