7H-Pyrazolo[4,3-d]pyrimidin-7-one, 5-[2-ethoxy-5-[[4-(2-hydroxyethyl)-1-piperazinyl]sulfonyl]phenyl]-1,6-dihydro-1-methyl-3-propyl-

7H-Pyrazolo[4,3-d]pyrimidin-7-one, 5-[2-ethoxy-5-[[4-(2-hydroxyethyl)-1-piperazinyl]sulfonyl]phenyl]-1,6-dihydro-1-methyl-3-propyl-