Showing structure for 2-({2-[(2-amino-6-{[(2,3-dihydroxyphenyl)(hydroxy)methylidene]amino}-1-hydroxyhexylidene)amino]-6-{[(2,3-dihydroxyphenyl)(hydroxy)methylidene]amino}-1-hydroxyhexylidene}amino)-3-(3h-indol-3-yl)propanoic acid