You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5Z)-5-[[3,5-diiodo-4-[(4-iodophenyl)methoxy]phenyl]methylidene]-3-methyl-1,3-thiazolidine-2,4-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H12I3NO3S
assistant