2-[4-(4-pyrimidin-2-ylpiperazin-1-yl)butyl]-3a,4,5,6,7,7a-hexahydroisoindole-1,3-dione 2-[4-[4-(2-pyrimidinyl)-1-piperazinyl]butyl]-3a,4,5,6,7,7a-hexahydroisoindole-1,3-dione 2-[4-(4-pyrimidin-2-ylpiperazin-1-yl)butyl]-3a,4,5,6,7,7a-hexahydroisoindole-1,3-quinone