This is a picture I taken from a book I read before. If my memory is right, this ought to be called Nord 2301, but I am not sure, if you have more clear pictures or details, please share with us. thanks in advance.
Yeap! Powered by coupled-german engines, it was a pressurisation testbed. The propulsion system turn to be a nightmare, and the plane was perfectly unuseful and outdated. It flew a dozen of times before being scrapped...a big waste of time and funds, no doubt about that!
I´ve been reading two days ago about this bird, in a Jane´s pocket book of Experimental Aircrafts , as Antonio said, the Aerocentre 3021 Belphegor, was based on the Farman 1000 of before the war, and had two Daimler Benz 605 engines, wich was a real nigtmare, so they choose to abandoned the project.
The NC.3021 was powered by a DB 610A, indeed an engine consisting of two
coupled DB.605. Construction of the initial design, the NC.3020 started in 1942
in occupied France. The originally envisaged powerplant consisted of two Hispano
Suizy 12Z engines. The aircraft was never used for high altitude tests.
There is a two-part article by Philippe Ricco in Avions no.207-208 (Sep.-Dec. 2015), way more detailed than the article in Le Fana.
There was also an article by Joël Mesnard in Le Moniteur de l'Aéronautique no.37 (Oct. 1980), with a beautiful 3-view.