1-((3-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo(4,3-d)pyrimidin-5-yl)-4 -ethoxyphenyl)sulfonyl)-cis-3,5-dimethylpiperazine
1-((3-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1h-pyrazolo(4,3-d)pyrimidin-5-yl)-4 -ethoxyphenyl)sulfonyl)-cis-3,5-dimethylpiperazine