155346-69-3 3H-Thiazolo(3,4-a)pyrazine-5,8-dione, tetrahydro-7-(3-(4-(diphenylmethyl)-1-piperazinyl)propyl)- 7-(gamma(4'-Benzhydrylpiperazino)propyl)thiazolidino(3,4-a)piperazine-5,8-dione