7-[2-hydroxy-3-[4-(2-hydroxyethyl)piperazin-1-yl]propyl]-1,3-dimethyl- purine-2,6-dione

3,7-Dihydro-7-[2-hydroxy-3-[4-(2-hydroxyethyl)-1-piperazinyl]propyl]-1,3-dimethyl-1H-purine-2,6-dione