2N is wrong.... sorry, but it is wrong.
Your hand is okay in terms of working points for an invitational bid, but you lack a
♠ stopper. It is silly to misdescribe your hand in constructive auctions when you have other, more descriptive, bids available.
A constructive auction is a dialogue, or conversation (leaving aside the question and answer structure of relay methods). If you could not use bids but had to, instead, describe your hand to your partner in words, would you say: I have a balanced hand with about 10-11 points with a
♠ stopper, do you want to bid 3N?
That would be a lie. So don't bid 2N if there is a non-lie available.
There are times when one's hand is so difficult to describe that one has to lie, and the usual expert advice is to choose the either the cheapest lie (to preserve room to escape) or the smallest lie (to minimize the distortion).
But here you have an easy 3
♦ bid.... unless your partner is one of those benighted souls who thinks that it is good bridge to open 1
♦ and rebid 2
♣ on 4=5 minors.
3
♦ says 'I have an invitational hand, with real
♦ support, but I either have a lot of shape or I lack a
♠ stopper, so couldn't bid 2N'
Listen to that description and then compare it to your hand... looks like a match to me.
I can, however, understand a reluctance to bid 3
♦ because the hand is soft and the 4333 shape unattractive... hands with such shape can usually be downgraded in valuation. But that does not make 2N more attractive: 2N shows the same strength as 3
♦... just differently located. So the choice is not 3
♦ or 2N: it is 3
♦ or 2
♦.... 2
♦ would be very conservative, but (especially at matchpoints) not ridiculously so. However, I look at my hand and I see 3 working cards in my partner's suits... 60% of my hcp are in his suits... this always makes me happy

So I opt for 3
♦.
Finally, 2N is the kind of bid I'd risk at mps, maybe, but never at imps. At mps, 120 beats 110... at imps, it doesn't.
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari
1♦:1♥
2♣: ?