sesamin [ asarinin,episesamin,sesamin, (1R-(1alpha,3aalpha,4alpha,6aalpha))-isomer,sesamin, (1R-(1alpha,3aalpha,4beta,6aalpha))-isomer ] constituent of sesame oil; RN given refers to (1S-(1alpha,3aalpha,4alpha,6aalpha)-isomer); episesamin is an epimer of sesamin