You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5Z)-1-(4-chlorophenyl)-5-[[3-[(4-chlorophenyl)methoxy]-4-methoxyphenyl]methylidene]-2-sulfanylidene-1,3-diazinane-4,6-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H18Cl2N2O4S
assistant