Well that's the coolest part about this, everything is based on the existing research.

The drugs they're making are the exact same chemical compounds formulated by the drug companies, and contrary to popular belief, the compounds can actually be relatively simple, it's the process of finding which compound that takes the most money from R&D.

So if you have 2-3 very standard chemicals, with well known reactions and outcomes, and you have the exact blueprint of what the final result should look like, and you can chemically test it afterward to see if it combined as expected, then anyone who has enough reason to use this instead of traditional means (i.e. being priced out of lifesaving medication completely) can be reasonably confident it will work.