Parse this person name:

Vera Korstman-Heijman (1721-1772, flourished 1742-1767)
user
first_name: Vera
last_name: Korstman-Heijman
middle_names: []
temporal:
- start: 1721
  end: 1772
  type: life_span
- start: 1742
  end: 1767
  type: flourished
titles: []
extra_info: []
assistant