Acetic acid (R)-1-[(2R,5R,2'R,5'R)-5'-((S)-2-acetoxy-1-methoxymethoxy-ethyl)-octahydro-[2,2']bifuranyl-5-yl]-undec-3-ynyl ester

Acetic acid (S)-2-[(2R,5R,2'R,5'R)-5'-((R)-1-acetoxy-undec-3-ynyl)-octahydro-[2,2']bifuranyl-5-yl]-2-(toluene-4-sulfonyloxy)-ethyl ester