How can I Major in Film and Medicinal Chemistry at UT-Austin?

Film is my passion and would really adore becoming a screenplay writer as my career, but I also fancy the synthesis of drugs since I have a heavy background in the medical courses at my High School. I know I don't want to deal with patients and rather spend my time in the labrotory as a viable back-up, but I would like to get my masters in both fields, yet I'm not sure how this is possible. Can anyone help me with what I should do to achieve this daunting task?