Parse this person name:

Valerie Ladeck-Sauer, 1833-1874, flourished 1849-1869
user
first_name: Valerie
last_name: Ladeck-Sauer
middle_names: []
temporal:
- start: 1833
  end: 1874
  type: life_span
- start: 1849
  end: 1869
  type: flourished
titles: []
extra_info: []
assistant