[S,(+)]-2-Acetylamino-4-(p-nitrophenyl)butyric acid
[S,(+)]-2-Acetylamino-4-(p-nitrophenyl)butyric acid ??
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[S,(+)]-2-Acetylamino-4-(p-nitrophenyl)butyric acid C??? ??, ??, ??
[S,(+)]-2-Acetylamino-4-(p-nitrophenyl)butyric acid ?? ?? ? ???
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[S,(+)]-2-Acetylamino-4-(p-nitrophenyl)butyric acid ?? ??
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