<prompt> Nikeza impendulo yalo mbuzo oyinkimbinkimbi: Lithini igama elifanele le-steroid esetshenziswa umgijimi waseBrithani osethathe umhlalaphansi ongomunye wabagijimi abagijima ngesivinini esikhulu kunabo bonke eYurophu emlandweni wezemidlalo?  <response>: I-tetrahydrogestrinone 