Parse this person name:

Víctor Bertrán (1723-1778, flourished 1749-1773)
user
first_name: Víctor
last_name: Bertrán
middle_names: []
temporal:
- start: 1723
  end: 1778
  type: life_span
- start: 1749
  end: 1773
  type: flourished
titles: []
extra_info: []
assistant