7-{(3S)-4-methoxy-3-[(methoxycarbonyl)amino]-4-oxobutyl}-4,6-dimethyl-3-(5-O-phosphono-beta-D-ribofuranosyl)-3,4-dihydro-9H-imidazo[1,2-a]purin-9-one
7-{(3s)-4-methoxy-3-[(methoxycarbonyl)amino]-4-oxobutyl}-4,6-dimethyl-3-(5-o-phosphono-beta-d-ribofuranosyl)-3,4-dihydro-9h-imidazo[1,2-a]purin-9-one