21-羟基孕烷醇酮

皮质甾酮

11β,18,21-trihydroxy-4-pregnen-3,20-dione

11beta,18-环氧-18,21-二羟基孕甾-4-烯-3,20-二酮

18,20-环-20,21-二羟基-4-孕烯-3-酮