The story
Probably from que(ll) + thia- + -apine (“psychoactive tricyclic compound”).
Etymology from Wiktionary, CC BY-SA 4.0.
quetiapine
Today it means: An antipsychotic drug taken orally in the form of its fumarate (C₂₁H₂₅N₃O₂S)₂·C₄H₄O₄ especially to treat schizophrenia and bipolar disorder. Full definition →