3d image of etynodiol skeletal formula

etynodiol ethynodiol steroidal progestin 19-nortestosterone progestogen diacylated derivative etynodiol diacetate hormonal contraceptive prodrug norethisterone intermediate lynestrenol 3d contraception birth control oral contraceptives mother gynecology obstetrics woman motherhood birth fertility reproduction reproductive female sex hormone menopausal hormone therapy gynecological conditions pregnancy hormonal function endocrine endocrinology level prohormone analogue bioactive cell biochemistry biology biomolecule