Parse this person name:

Alex Lejeune, 1628-1698, flourished 1649-1669
user
first_name: Alex
last_name: Lejeune
middle_names: []
temporal:
- start: 1628
  end: 1698
  type: life_span
- start: 1649
  end: 1669
  type: flourished
titles: []
extra_info: []
assistant