Viewing VRay Rendered StereoScopic CubeMaps In Oculus Rift S

Hi - I'm trying simply to view a stereoscopic cubemap that I rendered using Vray and 3ds max with an Oculus Rift S.  The CubeMapViewer tool only seems to work for a 6x1 mono cubemap, which I can easily render and view at 12288 x 2048.   But can't figure out how to view the stereoscopic version.