It’s very obvious they paid mister laurin who owned patents Re 1402 which is parent molecule of 4050
and as others mentioned salp which is also owned by Thomson had ip/assets as collateral for their loan they had to pay this back
when they wiped out retail investors in April 2019 they left 10 million loan that had collaterals
any potential buyer like boehringer would want these issues resolved
They want to make us believe that 4050 is worthless if that's true why bother paying laurin etc