2-chloro-3-(3-chloro-2,3-dimethylbutan-2-yl)cycloprop-2-enone

1,3,3-trichloro-2-(3-chloro-2,3-dimethylbutan-2-yl)cycloprop-1-ene

methyl 2-(4,4,5,5-tetramethyl-2-oxotetrahydrofuran-3-yl)acetate