You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[(2S)-4-(4-cyanobenzoyl)-2-[[(3R)-2-oxopiperidin-3-yl]carbamoyl]piperazin-1-yl]-5-oxopentanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H27N5O6
assistant