How to convert TextureRender TargetCube to TextureRender Target2D?

I used to be a Unity3D developer, and now I am learning UE4, and I have a problem.

In unity3d, there is a method to convert cubemap into 2D panorama:

public void ConvertToEquirect(RenderTexture equirect, Camera.MonoOrStereoscopicEye eye = Camera.MonoOrStereoscopicEye.Mono);

Is there a similar method in UE4?