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