Showing structure for (2e,4e)-2-{2-[(4as,8as)-2,5,5,8a-tetramethyl-3,4,4a,6,7,8-hexahydronaphthalen-1-yl]ethyl}-5-[(2r)-2-hydroxy-5-oxo-2h-furan-3-yl]penta-2,4-dienal