4-(nitroso(vinyl)amino)butanoic acid from Kollidon?

N-nitrosamines Chemistry
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I noticed a similar topic on PVP:

Would polyvinylpyrrolidone form nitrosamines? - N-nitrosamines Chemistry - Nitrosamines Exchange (usp.org)

However, my question is more:

Did anyone come across 4-(nitroso(vinyl)amino)butanoic acid being found?

And i find it interesting that it has not been listed yet anywhere.