(2S,3S,5E,7R,8R,10R)-8,10-bis(tert-butyldimethylsilyloxy)-3,5,7-trimethylundec-5-en-1,2-diol

(5S,6S,8E,11R,12S,14E,16R,17R,19R)-5,17,19-tris((tert-butyldimethylsilyl)oxy)-6,8,12,14,16-pentamethylicosa-8,14-diene-1,11-diol