(2Z,4E)-2-hydroxyhexa-2,4-dienedioate => (3E)-2-oxohex-3-enedioate
(2z,4e)-2-hydroxyhexa-2,4-dienedioate => (3e)-2-oxohex-3-enedioate
(2Z,4E)-2-hydroxyhexa-2,4-dienedioate => (3E)-2-oxohex-3-enedioate
(2z,4e)-2-hydroxyhexa-2,4-dienedioate => (3e)-2-oxohex-3-enedioate