preferred_name: (Z)-5-oxohex-2-enedioate <=> (2E,4Z)-2-hydroxyhexa-2,4-dienedioate
preferred_name_lc: (z)-5-oxohex-2-enedioate <=> (2e,4z)-2-hydroxyhexa-2,4-dienedioate
label: (Z)-5-oxohex-2-enedioate <=> (2E,4Z)-2-hydroxyhexa-2,4-dienedioate
label_lc: (z)-5-oxohex-2-enedioate <=> (2e,4z)-2-hydroxyhexa-2,4-dienedioate