Parse this person name:

Blas Castell (1757-1837, flourished 1772-1798)
user
first_name: Blas
last_name: Castell
middle_names: []
temporal:
- start: 1757
  end: 1837
  type: life_span
- start: 1772
  end: 1798
  type: flourished
titles: []
extra_info: []
assistant