Parse this person name:

Elmar Neuschäfer (1823-1876, flourished 1841-1858)
user
first_name: Elmar
last_name: Neuschäfer
middle_names: []
temporal:
- start: 1823
  end: 1876
  type: life_span
- start: 1841
  end: 1858
  type: flourished
titles: []
extra_info: []
assistant