cholest-8(14)-en-3-ol-15-one [ 3-beta-hydroxy-5-alpha-cholest-8(14)-en-15-one,3-hydroxy-5alpha-cholest-8(14)-en-15-one,5 alpha-cholest-8(14)-en-3 beta-ol-15-one,ACEBOO,cholest-8(14)-en-3-ol-15-one, (3alpha,5alpha)-isomer ] structure given in first source; regulator of cholesterol metabolism; RN given refers to (3beta,5alpha)-isomer