3d image of estrone skeletal formula

estrone oestrone steroid estrogen sex hormone female endogenous gonads cholesterol metabolic intermediate menopausal hormone therapy estrogen receptors hormonal replacement function action endocrine endocrinology level prohormone analogue gynecology woman gynecological conditions therapy symptoms steroid steroidal urine synthetic semisynthetic molecule molecular formula skeletal structural structure cell biology biochemistry biomolecule bioactive biochemical 3d