oleylamide [ 9,10-octadecenamide,9-octadecenamide,cis-9,10-octadecenoamide,oleamide,oleic acid amide,oleylamide, (E)-isomer,trans-9,10-octadecenoamide ] plastic additive; can cause contact urticaria; RN given refers to (Z)-isomer; a sleep inducing factor