3d image of 19-norpregnane skeletal formula

19-norpregnane progestins demegestone gestonorone caproate gestronol hexanoat nomegestrol acetate norgestomet promegestone segesterone nestorone trimegestone 3d rendering ftm kayromon model masculinizing function level replacement endocrine semisynthetic allomone prohormone intersex isolated transmasculine norsteroid contraception steroid action female- -male bodybuilding men hormone synthetic androgenic aas transgender androgen steroidal sex