1,8-Bis--5-formyl-octen-(5)-triin-(1,3,7)

(E)-1-(7-(benzyloxy)hept-3-en-1-ynyl)-4-bromobenzene

5--pentadiin-(2.4)-saeure

2-(4-bromobenzyl)-1-oxaspiro[4.5]dec-2-en-4-one