3d image of difluoronorethisterone acetate skeletal formula

difluoronorethisterone acetate progestogen progestogen ester 19-nortestosterone steroid norethisterone progestagen gestagen gestogen medication female sex hormone hormonal birth control menopausal hormone therapy gynecological conditions fertility pregnancy rendering hormonal replacement function action endocrine level prohormone analogue steroidal endogenous synthetic semisynthetic drug preparation mount treatment medicine medicament remedy cure side effect adverse iatrogenic overdose contraindications interaction