Parse this person name:

Stella Jansen (1770-1834, flourished 1798-1811)
user
first_name: Stella
last_name: Jansen
middle_names: []
temporal:
- start: 1770
  end: 1834
  type: life_span
- start: 1798
  end: 1811
  type: flourished
titles: []
extra_info: []
assistant