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