Parse this person name:

Sandra Mueller, 1348-1407, flourished 1369-1395
user
first_name: Sandra
last_name: Mueller
middle_names: []
temporal:
- start: 1348
  end: 1407
  type: life_span
- start: 1369
  end: 1395
  type: flourished
titles: []
extra_info: []
assistant