(2S)-2-methyl-2-phenylcyclopentan-1-one

(R)-(+)-2-methyl-2-phenylcyclopentanone

3,3-二甲基-1-苯基-2-丁酮

2-[2-(3,3-dimethyl-2-oxobutyl)phenyl]acetic acid

3,3-dimethyl-1,1-diphenylbutan-2-one