[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is members of the class of hydroxyflavan that have a flavan-3-ol skeleton and its substituted derivatives."}, {"from": "gpt", "value": "[C][C][Branch2][Ring2][Ring2][C][Branch2][Ring1][C][O][C][=C][C][=Branch1][O][=C][C][=Branch1][=Branch1][=C][Ring1][=Branch1][Ring1][#Branch2][O][O][C][=C][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][O][O]"}]