You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 2-[2-ethoxy-4-[(Z)-[3-(2-methylphenyl)-4-oxo-2-sulfanylidene-1,3-thiazolidin-5-ylidene]methyl]phenoxy]acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H23NO5S2
assistant