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