[{"from": "human", "value": "Provide a description of this molecule. [C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C@@H1][C][=Branch1][C][=O][N][C][=Branch1][C][=O][N][Ring1][#Branch1]"}, {"from": "gpt", "value": "The molecule is a D-5-monosubstituted hydantoin that is imidazolidine-2,4-dione in which the pro-R hydrogen at position 5 has been replaced by a phenyl group."}]