Parse this person name:

Olivier Chotzen (1938-1985, flourished 1954-1970)
user
first_name: Olivier
last_name: Chotzen
middle_names: []
temporal:
- start: 1938
  end: 1985
  type: life_span
- start: 1954
  end: 1970
  type: flourished
titles: []
extra_info: []
assistant