2-[2-(2-methylpropanoyl)-4-nitrophenoxy]acetic acid

3-ethyl-5-nitro-1-benzofuran-2-carboxylic acid

5-nitro-3-propan-2-yl-1-benzofuran-2-carboxylic acid

ethyl 2-(4-nitro-2-propanoylphenoxy)acetate

1-(2-hydroxy-5-nitrophenyl)-2-methylpropan-1-one