Seven players, round one, and you speak third.
Your hand
What is your plan for this hand?
Answer
Pass now, and pass again in round two. The Pagat, the II and the III are the three Ultimo cards, but the claim test counts Taroks from the XV up, and you hold one; a failed Ultimo also pays each opponent. You have no trump stop: the XV would need seven other Taroks. Without a trump stop, pass.
Rule: With a trump stop on the ladder, the trump-stop duty can force you to bid, and that is also the hand worth claiming voluntarily, because the twelve-card exchange rebuilds the hand around the trump stop; without a trump stop, pass.