Parse this person name:

Alex Jansen (1693-1743, flourished 1717-1732)
user
first_name: Alex
last_name: Jansen
middle_names: []
temporal:
- start: 1693
  end: 1743
  type: life_span
- start: 1717
  end: 1732
  type: flourished
titles: []
extra_info: []
assistant