The molecule is a doubly-charged tricarboxylic acid anion arising from deprotonation of the carboxy groups and protonation of the amino group of 3-epi-3-hydroxymugineic acid. It is a conjugate base of a 3-epi-3-hydroxymugineic acid.
(2S,3S)-1-[(2S,3S)-3-carboxylato-3-[[(3S)-3-carboxylato-3-hydroxypropyl]azaniumyl]-2-hydroxypropyl]-3-hydroxyazetidine-2-carboxylate