You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 3-[(4aS,8aS)-1,4-dioxo-4a,5,8,8a-tetrahydro-3H-phthalazin-2-yl]-N,N-dimethylbenzamide .
user
C17H19N3O3
assistant