Parse this person name:

Casper Muller (1721-1799, flourished 1736-1752)
user
first_name: Casper
last_name: Muller
middle_names: []
temporal:
- start: 1721
  end: 1799
  type: life_span
- start: 1736
  end: 1752
  type: flourished
titles: []
extra_info: []
assistant