Parse this person name:

Sauvage, Nathalie Hélène Pénélope Alexandrie Hélène Pénélope Alexandrie.
user
first_name: Nathalie
last_name: Sauvage
middle_names:
- Hélène
- Pénélope
- Alexandrie
temporal: []
titles: []
extra_info: []
assistant