[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a natural product found in Dictyota dichotoma with data available."}, {"from": "gpt", "value": "[C][C][=C][C][C][=C][Branch2][Ring2][C][C@@H1][Branch2][Ring1][#Branch1][C@H1][Branch1][Branch2][C@H1][Branch1][Ring2][C][Ring1][=Branch2][O][C@@H1][Branch1][C][C][C][C][C][=C][Branch1][C][C][C][C][O][C][=Branch1][C][=O][C][C][=O]"}]