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