2-azido-N-[1,3-dihydroxy-1-(4-nitrophenyl)propan-2-yl]acetamide
2-azido-N-[2-hydroxy-1-(hydroxymethyl)-2-(4-nitrophenyl)ethyl]acetamide
2-azido-N-[2-hydroxy-1-methylol-2-(4-nitrophenyl)ethyl]acetamide
2-azido-N-[1,3-dihydroxy-1-(4-nitrophenyl)propan-2-yl]ethanamide