You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-acetyl-N-[5-[4-(4-cyanophenyl)piperidine-1-carbonyl]-2-methylphenyl]piperidine-4-sulfonamide by IUPAC nomenclature, provide its molecular formula.
user
C27H32N4O4S
assistant