Parse this person name:

Piersanti Olivetti, 1817-1877, flourished 1833-1855
user
first_name: Piersanti
last_name: Olivetti
middle_names: []
temporal:
- start: 1817
  end: 1877
  type: life_span
- start: 1833
  end: 1855
  type: flourished
titles: []
extra_info: []
assistant