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 methyl 2-(2-chlorophenyl)-2-[(3E)-3-(2-ethoxy-2-oxoethylidene)-4-sulfanylpiperidin-1-yl]acetate;hydrochloride .
user
C18H23Cl2NO4S
assistant