preferred_name: (4Z)-2-oxohept-4-enedioate => (2Z,4Z)-2-hydroxyhepta-2,4-diene-1,7-dioate
preferred_name_lc: (4z)-2-oxohept-4-enedioate => (2z,4z)-2-hydroxyhepta-2,4-diene-1,7-dioate
label: (4Z)-2-oxohept-4-enedioate => (2Z,4Z)-2-hydroxyhepta-2,4-diene-1,7-dioate
label_lc: (4z)-2-oxohept-4-enedioate => (2z,4z)-2-hydroxyhepta-2,4-diene-1,7-dioate