Parse this person name:

Igor Bien (1747-1827, flourished 1768-1781)
user
first_name: Igor
last_name: Bien
middle_names: []
temporal:
- start: 1747
  end: 1827
  type: life_span
- start: 1768
  end: 1781
  type: flourished
titles: []
extra_info: []
assistant