?repeats the group contents below at most once:
\(the literal ( (4010 / 508 / 2816)
+matches at least one character from the set below:
a-zone character from a (9710) to z (12210) (case sensitive)
A-Zone character from A (6510) to Z (9010) (case sensitive)
\)the literal ) (4110 / 518 / 2916)
\s+any whitespace character, repeated at least once