You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 4-[(7-chloro-2H-chromen-3-yl)sulfonyl]-1-[(1-ethanimidoyl-4-hydroxypiperidin-4-yl)methyl]piperazin-2-one;hydrochloride using the IUPAC nomenclature.
user
C21H28Cl2N4O5S
assistant