get-aduser group membership

Hi,

I want to use the get-aduser cmdlet to return all nested groups that a user belongs to. 

I've tried :

(GET-ADUSER –Identity User1 –Properties MemberOf | Select-Object MemberOf).MemberOf

However this doesn't seem to return the nested groups :

Is there any way to do this with get-aduser (note - I can't use the quest get-qaduser function)

Thanks

Bill