3d image of ethynylandrostanediol skeletal formula

ethynylandrostanediol synthetic androstane steroid estrogen androstanediol prostate cancer steroid receptor affinities prodrug rendering hormone hormonal therapy replacement function action endocrine endocrinology level prohormone analogue tautomer isomer stereoisomer orbital structure activity relationship sar racemate steroidal semisynthetic bioactive cell biochemistry biology biomolecule drug preparation treatment medicament side effect adverse iatrogenic overdose contraindications interaction