Parse this person name:

Hellmut Hartmann (1734-1798, flourished 1750-1763)
user
first_name: Hellmut
last_name: Hartmann
middle_names: []
temporal:
- start: 1734
  end: 1798
  type: life_span
- start: 1750
  end: 1763
  type: flourished
titles: []
extra_info: []
assistant