how to get MHTML file information using powershell command

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PowerShell

Hi,
I have a mhtml file as test.mht
data present in test.mht is as below

Field	 String	 
Name	 Carpool	 
Type	 ModernApplication	 
Language	 en-us English	 
Category	 Tools	 
IsTrial	 false	 
GUID	 712ec8b1-0370-4ed5-b1ac-f0eca1f64348	 
Markets
MarketName	 
United States	 
Strings
Field	 String	 

question:
how to retrieve the GUID information using powershell command

ex:

$GetGUID =  [load mhtm file]
write-host $GetGUID.GUID

should print GUID as : 712ec8b1-0370-4ed5-b1ac-f0eca1f64348