(1S,9R)-10-(benzyloxy)-1-[(2S,6R)-tetrahydro-6-[(2R,5R)-tetrahydro-5-[(R)-1-(tert-butyldimethylsilyloxy)tridecyl]furan-2-yl]-2H-pyran-2-yl]-1,9-bis(tert-butyldimethylsilyloxy)decane