Parse this person name:

Leif Siering-Mühle, 1945-2025, flourished 1967-1992
user
first_name: Leif
last_name: Siering-Mühle
middle_names: []
temporal:
- start: 1945
  end: 2025
  type: life_span
- start: 1967
  end: 1992
  type: flourished
titles: []
extra_info: []
assistant