In organic chemistry if on that six sided thing two other parts stick out just on the opposite of each other it's called para position.
And since one is a D (for Deuterium) and the other OX (oxygen and a halogen, not very likely to happen though) you could call this thing Para-D-OX-benzene.
Cut the benzene and you get Paradox.
Not that funny? Well, it's scientists humor... ;)
haha. thanks for being smart enough to explain this to me!