(1E,3E,5E)-1-bromo-8-methoxy-2,6-dimethylocta-1,3,5,7-tetraene

4-bromo-1,1-dimethoxy-3-methylbut-2-ene

bromo-4 methyl-3 butene-2 al

bromo-4 methyl-3 trimethylsiloxy-1 butadiene

1-methoxy-3-methylbuta-1,3-diene