After a strong auction you end up in a meager 3nt. Partner jokes that he hopes you don't make too many.
You get a heart lead which you take in dummy and play the ♣A. East shows out! You wake up as your trick source has suddenly disappeared. You have 7 top tricks. What is your best chance to generate two more? You don't want partner to think you can't make a combined 30 point 3NT!
I will post the defender's hands after a few replies.

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