3d image of 19-norandrostenedione skeletal formula

19-norandrostenedione 3d agonist anabolic androgen androgenic appetite atom background ball biochemistry biomolecule block bodybuilding building chemical compound derivative endocrine function functional group intersex male masculinizing material matter memory metabolic model nandrolone nervous neurotransmitter norsteroid reaction rendering replacement scientific semisynthetic sex signaling steroid structural stuff substrate synthesis synthetic white