Parse this person name:

Agnès Mathilde Valentine Techer, Pichon-la-Forêt, 1823-1887
user
first_name: Agnès
last_name: Techer
middle_names:
- Mathilde
- Valentine
temporal:
- start: 1823
  end: 1887
  type: life_span
titles: []
extra_info:
- Pichon-la-Forêt
assistant