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 5-chloro-4-[[(3S)-3-(2-hydroxyethyl)-4-[(6-methylpyridin-2-yl)methyl]piperazin-1-yl]methyl]-2-methoxyphenol .
user
C21H28ClN3O3
assistant