You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 4-[4-[4-(1-methylpyrrolo[3,2-c]pyridin-4-yl)piperazin-1-yl]butyl]morpholine-3,5-dione ?
user
C20H27N5O3
assistant