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 1-(azepan-1-yl)-2-[4-(6-chloro-3,4-dihydro-2H-chromene-3-carbonyl)piperazin-1-yl]ethanone .
user
C22H30ClN3O3
assistant