The molecule is a monocarboxylic acid anion that is the conjugate base of yersiniabactin, obtained from the deprotonation of the carboxy group. It is the major species at pH 7.3. It is a conjugate base of a yersiniabactin.
(4S)-2-[(1S)-1-hydroxy-1-[(4R)-2-[(4R)-2-(2-hydroxyphenyl)-4,5-dihydro-1,3-thiazol-4-yl]-1,3-thiazolidin-4-yl]-2-methylpropan-2-yl]-4-methyl-5H-1,3-thiazole-4-carboxylate