Parse this person name:

Valentin Schmidtke (1607-1666, flourished 1637-1650)
user
first_name: Valentin
last_name: Schmidtke
middle_names: []
temporal:
- start: 1607
  end: 1666
  type: life_span
- start: 1637
  end: 1650
  type: flourished
titles: []
extra_info: []
assistant