You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2Z,5Z)-3-ethyl-5-[(2E)-2-(3-ethyl-5-methoxy-1,3-benzothiazol-2-ylidene)ethylidene]-2-(3-ethyl-4-oxo-2-sulfanylidene-1,3-thiazolidin-5-ylidene)-1,3-thiazolidin-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H23N3O3S4
assistant