import re
content = '!wordOne wordTwo THE REST OF THE SENTENCE WHICH COULD BE LONG'
result= re.sub(r'^!\w+\s+\w+\s+', '', content)
print(result)
aW1wb3J0IHJlCmNvbnRlbnQgPSAnIXdvcmRPbmUgd29yZFR3byBUSEUgUkVTVCBPRiBUSEUgU0VOVEVOQ0UgV0hJQ0ggQ09VTEQgQkUgTE9ORycgCnJlc3VsdD0gcmUuc3ViKHInXiFcdytccytcdytccysnLCAnJywgY29udGVudCkKcHJpbnQocmVzdWx0KQ==