3d image of tosagestin skeletal formula

tosagestin org-30659 exogestin letogestin progestin 19-nortestosterone hormonal contraceptive ethinylestradiol menopausal symptom progestagen gestagen gestogen hormone hormonal therapy replacement function action endocrine endocrinology level prohormone analogue contraception birth control oral contraceptives mother gynecology obstetrics woman motherhood birth fertility fertility medicine reproduction reproductive female sex hormone gynecological conditions pregnancy art assisted reproductive technology infertility 3d molecule molecular