3d image of levonorgestrel cyclobutylcarboxylate skeletal formula

levonorgestrel cyclobutylcarboxylate hrp-001 hrp001 cyclobutanecarboxylate progestogen progestin progestogen ester injectable hormonal contraceptive rendering contraception birth control oral contraceptives mother gynecology obstetrics woman motherhood birth fertility fertility medicine reproduction reproductive female sex hormone menopausal hormone therapy gynecological conditions pregnancy art assisted reproductive technology infertility hormonal replacement function action endocrine endocrinology analogue molecule molecular structural structure formula skeletal geometry ball stick