Problem

The Auction:

You open the auction with 1♦, North responds with 2♦ – Strong inverted minor raise (8-11 HCP, 4+ diamonds). North intervenes with 2♠, you show your clubs bidding 3♣, West chips in with 3♠ and North responds with 4♦. East goes on to 4♠ and you declare 5♦, which becomes the contract. How many tricks can you take?