4-{3-nitro-2-methylanilino}-4-oxobutanoic acid
4-{3-nitro-2-methylanilino}-4-oxobutanoic acid ??
??
4-{3-nitro-2-methylanilino}-4-oxobutanoic acid C??? ??, ??, ??
4-{3-nitro-2-methylanilino}-4-oxobutanoic acid ?? ?? ? ???
???
?? ??
4-{3-nitro-2-methylanilino}-4-oxobutanoic acid ?? ??
???( 1)?? ??
