You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-(3-chloro-4-methylphenyl)-2-[3-[(Z)-(4-oxo-3-phenyl-2-sulfanylidene-1,3-thiazolidin-5-ylidene)methyl]phenoxy]acetamide by IUPAC nomenclature, provide its molecular formula.
user
C25H19ClN2O3S2
assistant