Nice problem. I don't care much for five-four two suiter bids, as it may be a great way to go for a number. A doubleton club on my left is certain. Lefty has practically be 3352 or defending 1N would have saved us five IMPs. I play with pure instinct, as I have played all my life
1. Win the club ace, heart toward the jack.
A. Diamond to the ace (most likely), spade ace-king, ruff a spade, heart. Likely eight tricks - three spades, long heart, diamond ace, three clubs.
B. They draw trump, then lead a diamond (daft), win in hand and play three top spades. Why didn't you raise me to game, partner

?
2. Try to not lose too many IMPs. Diamond ace, diamond ruff, spade ace-king, spade ruff, diamond ruff, spade tossing a diamond. If they overruff the H8, shoot a club through, and tap out the dummy, I am minus. Otherwise, likely +110.
(1NT)* - 2♣# - (P) - 2♥;
All Pass