#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox
Local $sRegex = "(?m)(\w+\s+\d+,\d+\s+\d+,\d+\s+)\((\s+\d+\s+)\)(\s+)\((\s+\d+,\d+\s)\)(\s+\d+)"
Local $sString = "IBNR 13,123 1,234 ( 556 ) ( 2,355 ) 934 "
Local $sSubst = "$1$2$3$4$5"
Local $sResult = StringRegExpReplace($sString, $sRegex, $sSubst)
MsgBox($MB_SYSTEMMODAL, "Result", $sResult)
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm