I have a csv file column contains:

> 
> The\_Guardian2017-01-30\_17-44\_part199.pdf.txt\_00076\_\_\_1486548173000\_\_\_4982
>  The\_Guardian2017-01-30\_17-44\_part286.pdf.txt\_000D7\_\_\_1486548174948\_\_\_5316
>  The\_Guardian2017-01-30\_17-44\_part343.pdf.txt\_00117\_\_\_1486548176288\_\_\_9737
> 
> 
> 

............

I want to remove all the string after 

> 
> .txt
> 
> 
> 

to looks like this:

> 
> The\_Guardian2017-01-30\_17-44\_part199.pdf.txt
> 
> 
> 

any suggestions?