How to remove the brackets with all their content?

Sorry If this is a basic question, but I cannot manage to remove brackets with text inside them. For example, „Titanium (feat. Sia)“. I want it to be only „Titanium“. „Turn Me on (feat. Nicki Minaj)“ I want it to be „Turn Me on“.

Action: Guess values
Source format: %TITLE%
Guessing pattern: %TITLE% (feat. %DUMMY%