You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by N-[2-[3-(2,3-dioxo-1H-pyrazin-4-yl)propanoyl]-2-azabicyclo[2.1.1]hexan-5-yl]-2-(1-methylpyrazol-4-yl)acetamide ?
user
C18H22N6O4
assistant