No.
First, discus don't usually do well with other animals in the tank. Every discus breeder I know keeps discus in single-species tanks (i.e. nothing but discus).
They are "compatible" in the sense that they aren't likely to fight the other species, but that doesn't mean they'll be healthy. Discus have very weak immune systems, and with the mix you have, they are almost sure to contract some illness from the other fish, probably one that only kills the discus.
Second, your tank is about full with the fish you already have. A discus is a large fish, and doesn't tolerate crowding well. Frankly, you'd be wasting money on a discus, since it probably wouldn't live long, and would be even less likely to stay healthy and attractive.
By the way, mollies should not be in that community tank, either. They need harder, warmer water than the other fish you have. (And discus need softer, warmer water than the other fish you have.)
P.S. I hate to pick on anybody, but this is one of the dumbest answers I've ever seen: "if the computer says they can they can so go for it" ... Unless, of course, this person was being sarcastic. Do I really need to describe all the wrong information you can get through your computer?