Remove parenthesis and Characters inside it

I want to remove parenthesis along with all the characters inside it…

var str = B.Tech(CSE)2020;

print(str.replaceAll(new RegExp('/([()])/g'), '');

// output => B.Tech(CSE)2020
// output required => B.Tech 2020

I tried with bunch of Regex but nothing is working…

I am using Dart…

>Solution :

Your Dart syntax is off, and seems to be confounded with JavaScript. Consider this version:

String str = "B.Tech(CSE)2020";
print(str.replaceAll(RegExp(r'\(.*?\)'), " "));  // B.Tech 2020