Parse this person name:

van Ommeren, Maurits B. (Maurits Bastiaan), 1393-1437
user
first_name: Maurits
last_name: van Ommeren
middle_names:
- Bastiaan
temporal:
- start: 1393
  end: 1437
  type: life_span
titles: []
extra_info: []
assistant