2-[2-(4-Dibenzo[b,f][1,4]thiazepin-11-yl-1-piperazinyl)ethoxy]ethanol-d8 (2E)-2-Butenedioate,2-[2-(4-benzo[b][1,4]benzothiazepin-6-yl-2,2,3,3,5,5,6,6-octadeuteriopiperazin-1-yl)ethoxy]ethanol ;(E)-but-2-enedioic acid,Labelled Quetiapine. Used as an antipsychotic.,Quetiapine