1 9QJ (1s,3s,4e)-3-({3-hydroxy-2-methyl-5-[(phosphonooxy)methyl]pyridin-4-yl}methyl)-4-iminocyclopentane-1-carboxylic acid 1.000 2 X8B (3e,4e)-4-({3-hydroxy-2-methyl-5-[(phosphonooxy)methyl]pyridin-4-yl}methylidene)-3-iminocyclopent-1-ene-1-carboxylic acid 1.000 3 X8H (1r,3s,4z)-3-({3-hydroxy-2-methyl-5-[(phosphonooxy)methyl]pyridin-4-yl}methyl)-4-iminocyclopentane-1-carboxylic acid 1.000