Any of a class of antibioticphenoliclactones, based on (2S,3S,4S)-4-amino-2,3-dihydroxy-N1-{(1S)-1-[(3S)-8-hydroxy-1-oxo-3,4-dihydro-1H-isochromen-3-yl]-3-methylbutyl}hexanediamide, produced by Bacillus pumilus (species)
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