You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name tert-butyl 2-[[1-cyano-2-[4-(6-cyanopyridin-3-yl)phenyl]ethyl]carbamoyl]piperidine-1-carboxylate into its molecular formula.
user
C26H29N5O3
assistant