Parse this person name:

Dörte Koch II (1703-1758, flourished 1720-1734)
user
first_name: Dörte
last_name: Koch II
middle_names: []
temporal:
- start: 1703
  end: 1758
  type: life_span
- start: 1720
  end: 1734
  type: flourished
titles: []
extra_info: []
assistant