preferred_name: 2-oxopent-4-enoate + CO2 => (3E)-2-oxohex-3-enedioate + H(+)
preferred_name_lc: 2-oxopent-4-enoate + co2 => (3e)-2-oxohex-3-enedioate + h(+)
label: 2-oxopent-4-enoate + CO2 => (3E)-2-oxohex-3-enedioate + H(+)
label_lc: 2-oxopent-4-enoate + co2 => (3e)-2-oxohex-3-enedioate + h(+)