Parse this person name:

Étienne Regnier (1738-1779, flourished 1757-1767)
user
first_name: Étienne
last_name: Regnier
middle_names: []
temporal:
- start: 1738
  end: 1779
  type: life_span
- start: 1757
  end: 1767
  type: flourished
titles: []
extra_info: []
assistant