[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a member of isocoumarins."}, {"from": "gpt", "value": "[C][C][=C][C][=Branch2][Ring1][Branch1][=C][C][=C][Ring1][=Branch1][C][=C][Branch1][=Branch1][O][C][Ring1][=Branch1][=O][C][C][Branch1][C][C][O][O]"}]