Parse this person name:

Rousseau Fontaine, Frédéric Adrienne K. Denise, born 1877
user
first_name: Frédéric
last_name: Rousseau Fontaine
middle_names:
- Adrienne
- K.
- Denise
temporal:
- start: 1877
  end: null
  type: life_span
titles: []
extra_info: []
assistant