You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-(3,5-dimethylphenyl)-2-(2-methyl-5-oxo-6,7-dihydropyrazolo[1,5-a]pyrimidin-4-yl)acetamide is given. What is its corresponding molecular formula?
user
C17H20N4O2
assistant