[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a natural product found in Porella swartziana with data available."}, {"from": "gpt", "value": "[C][C@@][C][C@@H1][Ring1][Ring1][C][C][Branch2][Ring1][Branch1][C][C@][C][Ring1][Branch2][=C][C][=Branch1][C][=O][O][C@][Ring1][#Branch1][Branch1][Ring2][O][Ring1][Branch2][C][Branch1][C][C][C]"}]