sitosterol [ Harzol,24-ethylcholest-5-en-3 beta-ol,24-ethylcholesterol,3beta-sitosterol,3beta-stigmast-5-en-3-ol,beta-sitosterol,clionasterol,sitosterol, (3beta)-isomer,sitosterol, (3beta,24S)-isomer,sitosterol, (3beta,24xi)-isomer,sitosterol, 26-(14)C-labeled ] RN given refers to cpd without isomeric designation; structure in first source