A strange compound?

Chemistry is weird. Even in inorganic chemistry, there are some really strange compounds. There is, for instance, phosphotungstic acid: ${\rm H}_3{\rm P}{\rm W}_{12}{\rm O}_{40}$. Never heard of it until today.

And then there is this one (if it exists at all):

Somebody posted this on Google+. They wanted to know what its properties are. And now, so do I. There are a few tungsten compounds listed in online databases, but this is not one of them. Does it even exist? I don’t know. For some reason, I expect it to have properties not unlike those of tungsten carbide, but I could be completely off the mark.