11-KETOTIGOGENIN

25R,5ALPHA-SPIROSTAN-3BETA-OL-11-ONE

11-KETOTIGOGENIN [5A,25R-SPIROSTAN-3B-OL-11-ONE]

5-ALPHA, 20-ALPHA, 22-ALPHA, 25D-SPIROSTAN-3-BETA-OL-11-ONE