Parse this person name:

Sigmund Oestrovsky, 1859-1938, flourished 1882-1903
user
first_name: Sigmund
last_name: Oestrovsky
middle_names: []
temporal:
- start: 1859
  end: 1938
  type: life_span
- start: 1882
  end: 1903
  type: flourished
titles: []
extra_info: []
assistant