6-amino-3-(2-deoxy-5-O-phosphono-beta-D-ribofuranosyl)-3,7-dihydro-8H-imidazo[4,5-g]quinazolin-8-one
6-amino-3-(2-deoxy-5-o-phosphono-beta-d-ribofuranosyl)-3,7-dihydro-8h-imidazo[4,5-g]quinazolin-8-one