Parse this person name:

Pierre, Sébastien Xavier O. William Philippine., Lemaître-sur-Mer (1723-1792)
user
first_name: Sébastien
last_name: Pierre
middle_names:
- Xavier
- O.
- William
- Philippine
temporal:
- start: 1723
  end: 1792
  type: life_span
titles: []
extra_info:
- Lemaître-sur-Mer
assistant