16,17-Didehydropregnenolone acetate 16-Dehydropregnenolone acetate 20-Oxopregna-5,16-dien-3.beta.-yl acetate 3.beta.-Acetoxypregna-5,16-dien-20-one 979-02-2 Dehydropregnenolone acetate NSC37741 Pregna-5,16-dien-20-one, 3-(acetyloxy)-, (3.beta.)- Pregna-5,16-dien-20-one, 3.beta.-hydroxy-, acetate