(1E,3S,5Z)-1-chloro-3-t-butyldimethylsilyloxy-1,5-octadiene

methyl (11E,13S,15Z)-13-t-butyldimethylsilyloxyoctadec-11,15-dien-9-ynoate

methyl (9Z,11E,13S,15Z)-13-t-butyldimethylsilyloxyoctadeca-9,11,15-trienoate