1-((R)-1-phenylethyl)-3-((S,6E,10E)-3,7,11,15-tetramethylhexadeca-1,6,10,14-tetraen-3-yl)urea

tert-butyl (S)-2,2,4-trimethyl-4-((3E,7E)-4,8,12-trimethyltrideca-3,7,11-trien-1-yl)oxazolidine-3-carboxylate