(2-oxoquinoxalin-1-yl) acetate

1-hydroxy-2(1H)-quinoxalinone

[4-acetyloxy-8-methyl-7-(2-oxoethyl)nonyl] acetate

(7-methoxy-2-oxochromen-6-yl) acetate

N-(2,2-dimethyl-4-oxothietan-3-yl)acetamide