preferred_name: (3Z)-2-oxohex-3-enedioate => (2E,4Z)-2-hydroxyhexa-2,4-dienedioate
preferred_name_lc: (3z)-2-oxohex-3-enedioate => (2e,4z)-2-hydroxyhexa-2,4-dienedioate
label: (3Z)-2-oxohex-3-enedioate => (2E,4Z)-2-hydroxyhexa-2,4-dienedioate
label_lc: (3z)-2-oxohex-3-enedioate => (2e,4z)-2-hydroxyhexa-2,4-dienedioate