Top molding, 2001 Mercedes S430

[Wingnut]

Greetings all. New to this forum, and a first time poster. I am hoping one or more of you have experience with this vehicle.

The top windshield reveal molding is a very expensive metal piece with rubber edges. I can't see how it is clipped in, therefore not sure how to un-clip it.

Any advice would be very appreciated.
Thank you