You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(3-cyano-5,7-dimethylpyrazolo[1,5-a]pyrimidin-6-yl)-N-methylsulfonylpropanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C13H15N5O3S
assistant