You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[4-(azepan-1-ylsulfonyl)phenyl]-2-[4-(5-chloropyridin-2-yl)piperazin-1-yl]acetamide into its molecular formula.
user
C23H30ClN5O3S
assistant