4-(cyclohexylamino)-2-methyl-4-oxo-2-butenoicacid
4-(cyclohexylamino)-2-methyl-4-oxo-2-butenoicacid ??
??
4-(cyclohexylamino)-2-methyl-4-oxo-2-butenoicacid C??? ??, ??, ??
4-(cyclohexylamino)-2-methyl-4-oxo-2-butenoicacid ?? ?? ? ???
???
?? ??
4-(cyclohexylamino)-2-methyl-4-oxo-2-butenoicacid ?? ??
???( 1)?? ??