2-(3,3-dimethyl-2-oxobutyl)cyclopentan-1-one

1,1'-bi(cyclopentane)-2,2'-dione

2,2-dimethyl-7-phenylhepta-4,6-dien-3-one

1-[4-(4,4-dimethyl-3-oxopentyl)-2,3,5,6-tetraethylphenyl]-4,4-dimethylpentan-3-one

5-hydroxy-6,6-dimethoxy-2,2,5-trimethylhexan-3-one