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 ethyl 4-[2-(furan-2-carbonylamino)-4-[3-(2-oxopyrrolidin-1-yl)propylcarbamoyl]phenyl]piperazine-1-carboxylate ?
user
C26H33N5O6
assistant