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

2,4,6-三叔丁基嘧啶

1-imidazol-1-yl-4,4-dimethyl-1-phenylpentan-3-one

5,6-dihydroxy-2,2,9,9-tetramethyldeca-4,6-diene-3,8-dione

(Z)-2-hydroxy-5,5-dimethyl-4-oxo-2-hexenoic acid