[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a member of coumarins."}, {"from": "gpt", "value": "[C][C][O][C][Branch1][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]"}]