5-(2-Propyloxy-5-(1-methyl-2-pyrollidinylethylamidosulfonyl)phenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo(4,3-D)pyrimidine-7-one

5-[2-propyloxy-5-[2-(1-Methyl-2-pyrrolidinyl)ethylaMinosulfonyl]phenyl]-1-Methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyriMidine-7-one

5-[2-propyloxy-5-(2-(1-Methylpyrrolidin-2-yl)ethylaMinosulphonyl)phenyl]-1-Methyl-3-propyl-6,7-dihydro-1H-pyrazolo(4,3-d)pyriMidin-7-one

3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-N-[2-(1-methyl-2-pyrrolidinyl)ethyl]-4-propoxybenzenesulfonamide