A molecule known as chloroquine should be produced in massive quantities to help stem the coronavirus outbreak, said an official at a Paris hospital on Monday.

“We must produce now and very massively,” Philippe Juvin, head of emergency at Georges-Pompidou Hospital, told France Inter radio.

Juvin’s comments came as coronavirus is hitting France hard, along with neighboring Italy and Spain. To date, the virus has claimed 676 lives in France with 16,720 cases reported. 2,210 people have already recovered from the disease.

Chloroquine is the key molecule used in Plaquenil, the commercial name of a drug produced by French-based pharmaceutical

Read more: More of key drug key to stem coronavirus: French doctor