[{"from": "human", "value": "Provide a description of this molecule. [C][=C][Branch1][=N][N][C][=Branch1][C][=O][C][=Branch1][C][=O][N][Ring1][Branch2][N][=C][Branch1][=Branch1][N][C][Ring1][N][=O][N]"}, {"from": "gpt", "value": "The molecule is a member of the class of pteridines that is pteridine substituted by an amino group at position 2 and hydroxy groups at positions 4, 6 and 7. It has a role as a biological pigment. It is a member of pteridines, a heteroaryl hydroxy compound and a triol. It is a tautomer of a leucopterin (keto form)."}]