AI 77B

(3S,4S,5S)-3-Amino-4,5-dihydroxy-6-oxo-6-[[(S)-1-[(S)-3,4-dihydro-8-hydroxy-1-oxo-1H-2-benzopyran-3-yl]-3-methylbutyl]amino]hexanoic acid

(3S,4S,5S)-3-Amino-4,5-dihydroxy-6-oxo-6-[[(1S)-1-[(3S)-1-oxo-8-hydroxy-3,4-dihydro-1H-2-benzopyran-3-yl]-3-methylbutyl]amino]hexanoic acid