[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a natural product found in Plocamium cartilagineum with data available."}, {"from": "gpt", "value": "[C][C][Branch1][P][C][C][=Branch1][C][=C][C][Branch1][=Branch1][C][C][Ring1][#Branch1][Br][C][=C][Cl][Cl]"}]