How to use the HIVE the content in the brackets and braces are removed, there may be in the inside of the parentheses content words, English words and Numbers and special characters such as

A (A), B (B), C (C)
(net), b (b)
6 (online), C (9)
A (@)

This column through the hive of regular expressions into
A, B, C
On a, b
6, C
A