1-(2-chloro-1-((trimethylsilyl)oxy)cyclopentyl)pyrrolidine-2,5-dione

chloro-1-trimethylsiloxy-2-cyclopentene

3-(2-氧代环戊基)丙酸

1,3-环庚二酮

1,6-二氧螺环[4.4]-壬烷