[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a natural product found in Mycena alcalina and Phloeomana speirea with data available."}, {"from": "gpt", "value": "[C][C][=C][Branch2][Ring1][C][C][=Branch1][=C][=C][Branch1][#Branch2][C][=Branch1][Branch1][=C][Ring1][=Branch1][Br][O][C][O][O][O][C]"}]