A Study to Evaluate the Efficacy and Safety of Different Doses of CB03-154 in Adult Patients With Amyotrophic Lateral Sclerosis (ALS)

The goal of this clinical trial is to learn if drug CB03-154 works to treat ALS in adults. It will also learn about the safety of drug CB03-154. The main questions it aims to answer are: * Does drug CB03-154 have an effect on delaying disease progression, improving function, and prolonging survival in adult ALS patients? * What medical problems do patients have when taking drug CB03-154? Researchers will compare drug CB03-154 to a placebo (a look-alike substance that contains no drug) to see if drug CB03-154 works to treat ALS. Participants (adult ALS patients) will: * Take drug CB03-154 or a placebo every day for 39 weeks (an additional 39 weeks would be required if entering the open-label extension phase). * Visit the clinic approximately every 2-3 months for checkups and tests, and there is also telephone follow-up in between. * Keep a diary of daily medication (CB03-154 or other concomitant medications), and if there are any unplanned medications, the reason (disease or symptoms) also need be recorded.