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