Parse this person name:

Otmar Käster, 1807-1882, flourished 1822-1845
user
first_name: Otmar
last_name: Käster
middle_names: []
temporal:
- start: 1807
  end: 1882
  type: life_span
- start: 1822
  end: 1845
  type: flourished
titles: []
extra_info: []
assistant