Can I make unity asset using unreal shader code.

Hello.
I like unreal PBR shader and Post Processing.
But, I develop on unity.

So, I wanna make shader framework and post processing using unreal shader code.
and If it doesn’t have legal problem, I will sell it in unity assetstore.

Unreal source code belongs to you. but, shader code license is so compliated.
So, I’d like to know about Unreal shader license without C++ source code.