cilostazol3,4-dihydro-6-(4-(1-cyclohexyl-1H-tetrazol-5-yl)butoxy)-2(1H)-quinolinone6-(4-(1-cyclohexyl-1H-tetrazol-5-yl)butoxy)-3,4-dihydro-2(1H)-quinolinone6-(4-(1-cyclohexyl-1H-tetrazol-5-yl)butoxy)-3,4-dihydrocarbostyril6-[4-(1-Cyclohexyl-1H-tetrazol-5-yl)-butoxy]-3,4-dihydro-1H-quinolin-2-one