Parse this person name:

Frédéric Mercier-Pages (1837-1878, flourished 1854-1868)
user
first_name: Frédéric
last_name: Mercier-Pages
middle_names: []
temporal:
- start: 1837
  end: 1878
  type: life_span
- start: 1854
  end: 1868
  type: flourished
titles: []
extra_info: []
assistant