5-chloro-N-[(2S)-2-hydroxy-3-[N-nitroso-4-(3-oxomorpholin-4-yl)anilino]propyl]thiophene-2-carboxamide; (S)-5-chloro-N-(2-hydroxy-3-(nitroso(4-(3-oxomorpholino)phenyl)amino)propyl)thiophene-2-carboxamide