[cyclohexane]

Not one made by Nikon. They'd fit onto the lens, but when zooming out the rear element of the lens would smash into the front element of the teleconverter, and you'd likely have two broken sets of glass.

I haven't tried any of the third party options but the 18-200 is a f/5.6 at the long end; even a 1.4x TC would put you at f/8...