The molecule is a sterol ester that is ergosta-5,7,22,24(28)-tetraen-3beta-ol in which the hydroxyl hydrogen is substituted by an acetyl group. It derives from a hydride of a 5alpha-ergostane.
[(3S,9S,10R,13R,14R,17R)-10,13-dimethyl-17-[(E,2R)-6-methyl-5-methylidenehept-3-en-2-yl]-2,3,4,9,11,12,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3-yl] acetate