I think it is very clear:
Controlled study
"They will receive a capsule containing standardised cannabis extract or a capsule containing tetrahydrocannabinol - the active ingredient in cannabis.
The remaining patients will receive either a standard pain-relieving drug or a dummy pill."
Correct. A controlled study of termpene olivitrol, a compound manufactured by Hoffman-LaRoche for Unimed. No cannabis here.
They are testing a patented synthetic designer drug that mimics one of the cannabinoids. A test tube form of the natural compound THC found in cannabis. As you're keenly aware.