Parse this person name:

Czeslaw Ernst (1747-1792, flourished 1776-1787)
user
first_name: Czeslaw
last_name: Ernst
middle_names: []
temporal:
- start: 1747
  end: 1792
  type: life_span
- start: 1776
  end: 1787
  type: flourished
titles: []
extra_info: []
assistant