1-acetoxy-5-methyl-hept-4-en-3-one

5-chloro-5-methyl-hept-1-en-3-yne

tert-butyl 1-ethyl-1-methyl-pent-4-en-2-ynyl peroxide

5-methyl-5-((3-methylhept-6-en-4-yn-3-yl)peroxy)hept-1-en-3-yne