3-[2-[4-(2-methoxyphenyl)piperazin-1-yl]ethyl]-5-phenyl-1H-thieno[3,2-e]pyrimidine-2,4-dione 3-[2-[4-(2-methoxyphenyl)-1-piperazinyl]ethyl]-5-phenyl-1H-thieno[3,2-e]pyrimidine-2,4-dione 3-[2-[4-(2-methoxyphenyl)piperazin-1-yl]ethyl]-5-phenyl-1H-thieno[3,2-e]pyrimidine-2,4-quinone