Synonyms: [2R,3S,6S,7R,8R,(+)]-8-Butyl-3-[(3-formylamino-2-hydroxybenzoyl)amino]-7-hydroxy-2,6-dimethyl-4,9-dioxo-1,5-dioxonane;Deisovalerylblastmycin;N-[(3S,4R,7R,8R,9S)-4,9-Dimethyl-2,6-dioxo-7-butyl-8-hydroxy-1,5-dioxonane-3-yl]-3-(formylamino)-2-hydroxybenzamide