[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a natural product found in Leathesia marina with data available."}, {"from": "gpt", "value": "[C][=C][Branch1][=C][C][=Branch1][#Branch2][=C][C][=Branch1][Branch1][=C][Ring1][=Branch1][O][O][Br][C][=O]"}]