Revit :: Export 3D Model With Areas Identified

I already have a revit model of a building with the areas identified like "room A", "room B", etc. I exported it to FBX and opened with Unity but the information about the rooms was not there (I am assuming FBX format does not save that information)
 
I might be wrong but I beleive IFC format saves this information. The problem is that Unity does not import IFC files and the file seems way too complicated to make my own parser to read it. I was wondering if there is a lib or something that I could use to visualize the 3D model without losing the rooms identification.