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