Parse this person name:

Gusti Tröst (1740-1783, flourished 1755-1767)
user
first_name: Gusti
last_name: Tröst
middle_names: []
temporal:
- start: 1740
  end: 1783
  type: life_span
- start: 1755
  end: 1767
  type: flourished
titles: []
extra_info: []
assistant