(S)-3-[(R)-13-{(2R,5R,2'R,5'R)-5'-[(1R,7S)-1,7-Bis-(2-trimethylsilanyl-ethoxymethoxy)-undecyl]-octahydro-[2,2']bifuranyl-5-yl}-13-(2-trimethylsilanyl-ethoxymethoxy)-tridecyl]-5-methyl-5H-furan-2-one

(S)-3-[(E)-(R)-13-{(2R,5R,2'R,5'R)-5'-[(1R,6S)-1,6-Bis-(2-trimethylsilanyl-ethoxymethoxy)-undecyl]-octahydro-[2,2']bifuranyl-5-yl}-13-(2-trimethylsilanyl-ethoxymethoxy)-tridec-7-en-5-ynyl]-5-methyl-5H-furan-2-one