It's just an AI front-end to the regular booking tool.
NOK66,185 is the base fare for a 5-continent business class Oneworld Explorer (a DONE5).

I played with the AI front end some time ago. I found it painful to use, especially its insistence on re-ordering your cities every time you made a change.

I just tried it out again with a simple ex-Cairo itinerary (CAI-LON-NBO-DOH-ATL-LAX-MEL-PER-LON-CAI)
It flagged the error of 3 stopovers in the continent of origin.
So I removed DOH
It then flagged a totally made-up error - "Your trip may not include two stops in London without visiting any other city in Europe-Middle East. I am dropping one of the visits to London."

At which point, I gave up on it.