Parse this person name:

Laetitia Morin-Mercier (1687-1756, flourished 1709-1720)
user
first_name: Laetitia
last_name: Morin-Mercier
middle_names: []
temporal:
- start: 1687
  end: 1756
  type: life_span
- start: 1709
  end: 1720
  type: flourished
titles: []
extra_info: []
assistant