You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(2,6-dioxopiperidin-3-yl)-4-[4-(4-pentylpiperazin-1-yl)butoxy]isoindole-1,3-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H36N4O5
assistant