(S)-3-{(2R,13R)-2,13-Bis-methoxymethoxy-13-[(2R,5R,2'R,5'R)-5'-((S)-1-methoxymethoxy-undecyl)-octahydro-[2,2']bifuranyl-5-yl]-tridecyl}-4-hydroxy-5-methyl-dihydro-furan-2-one