Showing structure for n-[3-(5-{3-[(1,5-dihydroxy-3-methylpent-2-en-1-ylidene)amino]propyl}-3,6-dihydroxy-2,5-dihydropyrazin-2-yl)propyl]-5-{[5-(n,5-dihydroxy-3-methylpent-2-enamido)-2-[(1-hydroxyethylidene)amino]pentanoyl]oxy}-3-methylpent-2-enimidic acid