Parse this person name:

Alex Dupont (1709-1764, flourished 1736-1759)
user
first_name: Alex
last_name: Dupont
middle_names: []
temporal:
- start: 1709
  end: 1764
  type: life_span
- start: 1736
  end: 1759
  type: flourished
titles: []
extra_info: []
assistant