[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a member of coumarins."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=C][/C][=C][/C][=C][Branch2][Ring1][C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=C][C][=Branch1][C][=O][O][Ring1][Branch2][O][C]"}]