The molecule is a 3-oxo-5alpha-steroid that is 5alpha-estrane which is substituted by an oxo group at position 3, a hydroxy group at the 17beta position, and which has a double bond between positions 1 and 10. It is a 19-norsteroid arising from successive oxidation of dihydrotestosterone at C19. It is a C18-steroid, a 17beta-hydroxy steroid and a 3-oxo-5alpha-steroid.
(5S,8R,9S,13S,14S,17S)-17-hydroxy-13-methyl-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydro-2H-cyclopenta[a]phenanthren-3-one