4-hexadecoxy-4-oxobutanoate

1,4-bis(2,4-dihydroxyphenyl)butanedione

3',6'-dihydroxyspiro[oxolane-5,9'-xanthene]-2-one

4-(3,4-二乙氧基苯基)-4-氧代丁酸

6,7-dihydrocycloheptacenaphthene-5,8-dione