So I have a question for Husar, Ser Clegane, Centurio, or any other native German speakers. Which of the following sounds better?:

-Der Euro wird eingeführt werden müssen haben
-Der Euro muß eingeführt worden sein werden

I realize they're more complicated and perhaps contrived than the vast majority of what anyone would ever say, but I'm trying to establish the relative ordering of German auxiliary verbs, so I want to fit as many kinds in together as possible. Also let me know if they're both horrible and there's something else I've completely overlooked.

Thanks,
Ajax