(8E,10E)-(2R,4S)-7-(tert-Butyl-dimethyl-silanyloxy)-2,4-dimethyl-1-triethylsilanyloxy-dodeca-8,10-dien-5-one

3-[(8E,10E)-(2R,4S)-7-(tert-Butyl-dimethyl-silanyloxy)-1-hydroxy-2,4-dimethyl-5-oxo-dodeca-8,10-dienyl]-4-methoxy-5-methylene-5H-furan-2-one

(8E,10E)-(2R,4S)-7-(tert-Butyl-dimethyl-silanyloxy)-1-(4-methoxy-5-methylene-2-oxo-2,5-dihydro-furan-3-yl)-2,4-dimethyl-dodeca-8,10-diene-1,5-dione