Pass then 1♣ from North.

East then has choice of 1♦ or the more aggresive disruptive 2♦ or 3♦ as you do no thave game as partner has passed.

Over all ♦ bids South can bid ♠ s.

West may jump to 5♦ this is easier over 2♦  or 3♦ but even over 1♦ West realises that they do not have game so sacrifice straight away and take bidding space away.

North has a difficult decision over 5♦ . Only 11HCPs but useful void and As and Ks, rather than Qs or Js.

5♠, 6♠, Double or pass?

5♠ could be good as offensive hand, but with 2 defensive tricks.