(2S,3S,4R,5R,6R,7R,10R)-4-iodo-7-isopropyl-2,3,5,10-tetramethyl-1-oxaspiro[5.5]undecane

(E)-(4R,5S)-5-(tert-Butyl-dimethyl-silanyloxy)-4-methyl-hex-2-enal