[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an extended flavonoid that is the 2S*-diastereomer of nigrasin E. It has been isolated from the twigs of Morus nigra. It has a role as a plant metabolite. It is an extended flavonoid, an organic heteropentacyclic compound and a polyphenol."}, {"from": "gpt", "value": "[C][C][=Branch2][Branch1][=Branch2][=C][C][C@@][C][=C][Branch1][#Branch2][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][O][C@@][Ring1][#Branch2][Branch2][Ring1][P][C][=Branch1][C][=O][C][=C][Branch1][Ring2][O][Ring1][#C][C][=C][Branch1][=Branch1][C][=C][Ring1][#Branch1][O][O][C@@H1][Branch1][Ring2][C][Ring1][Branch2][C][=Branch1][C][=C][C][O][C]"}]