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