Ziprasidone Dimer,5,5'-Bis[2-[4-(1,2-benzisothiazol-3-yl)piperazin-1-yl]ethyl]-6,6'-dichloro-3-hydroxy-1,1',3,3'-tetrahydro-2H,2'H-3,3'-biindole-2,2'-dione ; 5,5′-Bis{2-[4-(benzoisothiazol-3-yl)piperazin-1-yl]ethyl}-6,6′-dichloro-3-hydroxy-3,3′-biindoline-2,2′-dione; [3,3`-Bi-2H-indole]-2,2`-dione,5,5`-bis[2-[4-(1,2-benzisothiazol-3-yl)-1-piperazinyl]ethyl]-6,6`-dichloro-1,1`,3,3`-tetrahydro-3-hydroxy-