Parse this person name:

Iwan Etzler (1801-1859, flourished 1823-1851)
user
first_name: Iwan
last_name: Etzler
middle_names: []
temporal:
- start: 1801
  end: 1859
  type: life_span
- start: 1823
  end: 1851
  type: flourished
titles: []
extra_info: []
assistant