Regular expression

Hello,
I would like to know how I can take this kind of strings with regular expressions:

{724EF170-A42D-4FEF-9F26-B60E846FBA4F}

{9E52AB10-F80D-49DF-ACB8-4330F5687855}

{de61d971-5ebc-4f02-a3a9-6c82895e5c04}

Thanks for everything.