Parse this person name:

Mercedes Köster (1382-1460, flourished 1410-1423)
user
first_name: Mercedes
last_name: Köster
middle_names: []
temporal:
- start: 1382
  end: 1460
  type: life_span
- start: 1410
  end: 1423
  type: flourished
titles: []
extra_info: []
assistant