[{"from": "human", "value": "Describe this molecule. [C][=N][C][=C][Branch1][Ring2][N][Ring1][Branch1][C][=Branch1][C][=O][N][C][=N][Ring1][Branch2]"}, {"from": "gpt", "value": "The molecule is a purine nucleobase that consists of purine bearing an oxo substituent at position 6. It has a role as a fundamental metabolite. It is an oxopurine, a purine nucleobase and a nucleobase analogue. It is functionally related to an adenine."}]