1 4HL (6e)-4-[(2s)-2-amino-2-carboxyethyl]-6-[2-(4-hydroxybenzyl)hydraziniumylidene]-3-oxocyclohexa-1,4-dien-1-olate 1.000 2 3TY 3-[(3e)-3-(benzylhydrazono)-4-hydroxy-6-oxocyclohexa-1,4-dien-1-yl]-L-alanine 0.958