Parse this person name:

Sergei Mangold, 1807-1848, flourished 1830-1843
user
first_name: Sergei
last_name: Mangold
middle_names: []
temporal:
- start: 1807
  end: 1848
  type: life_span
- start: 1830
  end: 1843
  type: flourished
titles: []
extra_info: []
assistant