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 N-(3-chlorophenyl)-2-(4-chlorophenyl)imino-4-oxo-3-prop-2-enyl-1,3-thiazinane-6-carboxamide .
user
C20H17Cl2N3O2S
assistant