5-ethyl-3-methylnona-3,4-dien-6-yne

5,7-diethyldeca-5,6-dien-3-yne

1,5-bis(dimethylsilyl)hexa-3,4-dien-1-yn-3-yl-dimethylsilane

dimethyl-[1,4,6-tris(dimethylsilyl)hexa-2,3-dien-5-yn-2-yl]silane