Building on our conversations about AI in healthcare, let's focus on drug development.  How is AI being used to identify drug targets, design new molecules, and predict the efficacy and safety of potential drugs?  Discuss the potential of AI to personalize drug therapies. 
<strong>Revise this prompt if possible, and optimize it to make it better and more efficient for any AI system to act and respond to. 
If possible run your optimized version.</strong>