[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][Branch2][Ring1][#C][C][Branch2][Ring1][#Branch2][C][C][N][=C][C][Branch1][Ring2][N][Ring1][=Branch1][Branch1][=N][C][=Branch1][C][=O][N][C][=Branch1][Ring2][=N][Ring1][Branch2][N][O][O][O]"}, {"from": "gpt", "value": "The molecule is a tetrahydropterin that is 5,6,7,8-tetrahydrobiopterin carrying an additional hydroxy substituent at the 4a-position. It has a role as a human metabolite. It is a tetrahydropterin and a hemiaminal. It is functionally related to a 5,6,7,8-tetrahydrobiopterin."}]