Parse this person name:

Mülichen, Ricardo Waldtraut Hans-Helmut Henner., Osterode am Harz (died 1870)
user
first_name: Ricardo
last_name: Mülichen
middle_names:
- Waldtraut
- Hans-Helmut
- Henner
temporal:
- start: null
  end: 1870
  type: life_span
titles: []
extra_info:
- Osterode am Harz
assistant