Task: Please generate a molecule SMILES based on the text description below.
Description: 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.
Result: O=c1[nH]c(=O)c2[nH]cnc2[nH]1
Task: Please {#give me|create|generate!} a {#molecule |!}{SMILES__description} based on the {#text |!}description{# below|!}.
Description: {description#}
Result: {SMILES#}
O=c1[nH]c(=O)c2[nH]cnc2[nH]1
3,7-dihydropurine-2,6-dione
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.