Nikkomycin X

2-[(2R)-5α-(4-Formyl-2,3-dihydro-2-oxo-1H-imidazol-1-yl)-3β,4β-dihydroxyoxolan-2α-yl]-N-[(3S,4S)-4-hydroxy-4-(5-hydroxy-2-pyridinyl)-L-Val-]-L-Gly-OH

5-[[(2S,3S,4S)-2-Amino-4-hydroxy-4-(5-hydroxy-2-pyridinyl)-3-methyl-1-oxobutyl]amino]-1-(4-formyl-2,3-dihydro-2-oxo-1H-imidazol-1-yl)-1,5-dideoxy-β-D-allofuranuronic acid