You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 4-(7-chloroquinolin-4-yl)-N-[(3S)-1-methyl-2-oxoazepan-3-yl]piperazine-1-carboxamide .
user
C21H26ClN5O2
assistant