Parse this person name:

Aleksandr Säuberlich (1740-1815, flourished 1761-1775)
user
first_name: Aleksandr
last_name: Säuberlich
middle_names: []
temporal:
- start: 1740
  end: 1815
  type: life_span
- start: 1761
  end: 1775
  type: flourished
titles: []
extra_info: []
assistant