You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[3-(2,4-dioxo-5,6,7,8-tetrahydroquinazolin-1-yl)propyl]-N,3-dimethylbenzenesulfonamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H25N3O4S
assistant