The molecule is a uric acid. It is a tautomer of a 9H-purine-2,6,8-triol, a 1H-purine-2,6,8-triol, a 7H-purine-2,6,8-triol, a 2,6-dihydroxy-7,9-dihydro-8H-purin-8-one and a 7,9-dihydro-1H-purine-2,6,8(3H)-trione.
5,7-dihydro-3H-purine-2,6,8-trione