Export AD-user username, name and group membership to csv

Hey!

I'm new to Powershell and trying to read out the user name, givenname, surname and group membership of a AD user and put this as one row in a CSV file.

I found a command in the forum that works fine, but I don't know how to modify it, that it puts out the groups in one row.

get-aduser testuser -properties memberof,samaccountname,givenname,surname | select samaccountname,givenname,surname, @{name="Groups";expression={$_.memberof}} | export-csv "D:\ADUsers.csv" -Delimiter ";" -NoTypeInformation -Encoding UTF8

The command does what I want, but it adds things like "CN=\itusers,CN=Users,DC=dcmydom,DC=local" to the groupname.

I want the output to be the same as the output of this command (just the groupnames, but in one line ):

Get-ADPrincipalGroupMembership testuser | select name | Export-Csv .\export2.csv -Delimiter ";" -NoTypeInformation -Encoding UTF8

Example: #itusers, finances, HR, examplegroup, examplegroup2

Thanks for your help!