How to parse DNS log

Elastic Stack Logstash
1

I have some log like

(2)au(8)download(13)windowsupdate(3)com(0)
(8)clients3(6)google(3)com(0)
(3)v10(10)vortex-win(4)data(9)microsoft(3)com(0)

Now i want it look like

au.download.windowsupdate.com
clients3.google.com
v10.vortex-win.data.microsoft.com

How can do it. Thank!

2

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