Parse this person name:

Derrick Donovan (1820-1863, flourished 1849-1858)
user
first_name: Derrick
last_name: Donovan
middle_names: []
temporal:
- start: 1820
  end: 1863
  type: life_span
- start: 1849
  end: 1858
  type: flourished
titles: []
extra_info: []
assistant