Parse this person name:

Bernd Hettner (1741-1785, flourished 1760-1780)
user
first_name: Bernd
last_name: Hettner
middle_names: []
temporal:
- start: 1741
  end: 1785
  type: life_span
- start: 1760
  end: 1780
  type: flourished
titles: []
extra_info: []
assistant