You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 2-[4-[5-[3-[4-(2-ethoxy-2-oxoethyl)phenyl]-4-oxo-2-sulfanylidene-1,3-thiazolidin-5-ylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]phenyl]acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H22N2O6S4
assistant