You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-[(2S)-butan-2-yl]-2-(5,7-dioxo-6-propyl-[1,2]thiazolo[4,3-d]pyrimidin-4-yl)acetamide is given. What is its corresponding molecular formula?
user
C14H20N4O3S
assistant