(4S,5S,6R,7R,8S)-4,6,8-trimethyl-5-trimethylsilyloxy-7-(tert-butyldimethylsilyloxy)-2-decyne

(2R,6R)-2-((1'E,3'Z,5'R,7'E,9'E,11'R,12'S,13'S,14'R,15'S)-14'-(tert-butyldimethylsilyloxy)-3'-ethyl-5',9',11',13',15'-pentamethyl-12'-trimethylsilyloxy-heptadeca-1',3',7',9'-tetraen-1'-yl)-6-isopropoxy-3,6-dihydro-2H-pyran