[{"from": "human", "value": "What can you tell me about this molecule? [C][=N][C][=C][Branch1][Ring2][N][Ring1][Branch1][C][=Branch1][C][=O][N][C][=Branch1][C][=O][N][Ring1][=Branch2]"}, {"from": "gpt", "value": "The molecule is an oxopurine in which the purine ring is substituted by oxo groups at positions 2 and 6 and N-9 is protonated. It has a role as a Saccharomyces cerevisiae metabolite. It is a tautomer of a 7H-xanthine."}]