import re
regex = r" +(?=[^(]*\))| +(?=[^{]*\})"
test_str = ("{ ia } ( { fascia } antebrachii ). Genom att aponeurosen \n")
result = re.sub(regex,"", test_str)
if result:
print (result)
aW1wb3J0IHJlCnJlZ2V4ID0gciIgKyg/PVteKF0qXCkpfCArKD89W157XSpcfSkiCnRlc3Rfc3RyID0gKCJ7IGlhIH0gKCB7IGZhc2NpYSAgfSBhbnRlYnJhY2hpaSApLiBHZW5vbSBhdHQgYXBvbmV1cm9zZW4gXG4iKQpyZXN1bHQgPSByZS5zdWIocmVnZXgsIiIsIHRlc3Rfc3RyKQppZiByZXN1bHQ6CglwcmludCAocmVzdWx0KQo=