You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-(2-chlorophenyl)-2-[4-[2-[(1R)-cyclopent-2-en-1-yl]acetyl]piperazin-1-yl]acetamide into its molecular formula.
user
C19H24ClN3O2
assistant