bis[2-oxo-2-(4-phenylphenyl)ethyl] butanedioate

4-(N-hydroxy-2-methylanilino)-4-oxobutanoic acid

N,N'-dimethyl-N,N'-diphenylbutanediamide

1,4,9,12-tetraoxacyclohexadecane-5,8,13,16-tetrone

醋酸