7-[2-(4-Benzyl-1-piperazinyl)ethyl]theophyline

7-[2-(4-Benzyl-1-piperazinyl)ethyl]theophylline

7-[2-(4-Benzyl-1-piperazinyl)ethyl]-3,7-dihydro-1,3-dimethyl-1H-purine-2,6-dione