Parse this person name:

Sten van der Avoirt, 1730-1809, flourished 1753-1778
user
first_name: Sten
last_name: van der Avoirt
middle_names: []
temporal:
- start: 1730
  end: 1809
  type: life_span
- start: 1753
  end: 1778
  type: flourished
titles: []
extra_info: []
assistant