N-环戊基-n-丙胺

2-(2-chloroprop-2-enyl)cyclopentan-1-one

2-oxo-1-(3-oxobutyl)cyclopentane-1-carbaldehyde

spiro[4.5]dec-9-ene-4,8-dione

spiro[4.4]nonane-1,4-dione