[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][Branch2][Ring1][Branch1][N][C][=C][Branch1][Ring2][N][Ring1][=Branch1][C][=Branch1][C][=O][N][C][=Branch1][Ring2][=N][Ring1][Branch2][N][C]"}, {"from": "gpt", "value": "The molecule is a member of pterins."}]