[{"from": "human", "value": "Describe this molecule. [C][C][=C][Branch2][Ring2][Branch1][N][Branch2][Ring1][C][C][=N][C][=Branch1][N][=N][C][=Branch1][C][=O][C][Ring1][#Branch1][=N][Ring1][O][N][C][C@@H1][Branch1][O][C@@H1][Branch1][#Branch1][C@@H1][Branch1][Ring1][C][O][O][O][O][C]"}, {"from": "gpt", "value": "The molecule is a member of the family of pteridines that is 2-amino-6,7-dimethyl-4-oxo-4,8-dihydropteridine in which the hydrogen at position 8 is replaced by a D-ribityl group. It is functionally related to a ribitol."}]