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 (5E)-5-[(5-chloro-2-methoxyphenyl)methylidene]-1-(2-chlorophenyl)-2-sulfanylidene-1,3-diazinane-4,6-dione .
user
C18H12Cl2N2O3S
assistant