Parse this person name:

Margot Hélène Tristan Pereira, Boyerboeuf, died 1745
user
first_name: Margot
last_name: Pereira
middle_names:
- Hélène
- Tristan
temporal:
- start: null
  end: 1745
  type: life_span
titles: []
extra_info:
- Boyerboeuf
assistant