Why isn't this a compound?
This structure is impossible as either the molecule is planar and then the C-C bonds on the outer ring are extremely long (and therefore weak), or you distort from the sp2 geometry (120 degree bond angles) of the central ring carbons so that the outer ring is beneath the inner one, which would also require a very high energy state. The only stable circumscribed ring structures you'll find are macromolecular.