C＃Regex - 如何从字符串中删除多个配对的括号

I am trying to figure out how to use C# regular expressions to remove all instances paired parentheses from a string. The parentheses and all text between them should be removed. The parentheses aren't always on the same line. Also, their might be nested parentheses. An example of the string would beI am trying to figure out how to use C# regular