regualr expression, match all text within two characters : gotta ask cuz this takes me to much time to go over again again everytime needed, how to match this:

Carina Costa(42353)

when given this:

"CN=Carina Costa(42353),OU=Administrativos,OU=Amadora,OU=Utilizadores,DC=hluz,DC=ess,DC=local"

using php preg_match()