How to get negative result in regex to accept more words

I am trying to get some data for Splunk.

From this:

this my line - Fine (R/S)
more date - I like this (not)
date - output (yes)

      

        
        
        
      

    

I like to get all data from -

to the end of the line, but not the data in parentheses if they contain not

or yes

, so the data in group1

should be:

Fine (R/S)
I like this
output

      

        
        
        
      

    

I've tried several of these:

- (.+) (?!(not|yes))

      

        
        
        
      

    

But this gives:

Fine
I like this
output

      

        
        
        
      

    

Or that:

- (.+)(?!not)

      

        
        
        
      

    

gives:

Fine (R/S)
I like this (not)
output (yes)