11,11'-[1,2-Ethanediylbis(oxy-2,1-ethanediyl-4,1-piperazinediyl)]bisdibenzo[b,f][1,4]thiazepine tetrahydrochloride; Dibenzo[b,f][1,4]thiazepine, 11,11'-[1,2-ethanediylbis(oxy-2,1-ethanediyl-4,1-piperazinediyl)]bis-, hydrochloride (1:4); Quetiapine Fumarate EP Impurity E as Tetrahydrochloride; Quetiapine Fumarate Impurity E as Tetrahydrochloride; 11,11′-[Ethylenebis(oxyethylenepiperazine-4,1-diyl)]bis(dibenzo[b,f][1,4]thiazepine) Tetrahydrochloride
