You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5Z)-5-[(4-butan-2-yloxy-3-chlorophenyl)methylidene]-1-methyl-2-sulfanylidene-1,3-diazinane-4,6-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H17ClN2O3S
assistant