You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(3-benzyl-1,3-thiazol-3-ium-2-yl)methylidene]-5-(7-chloro-3-methyl-1,3-benzothiazol-2-ylidene)-3-ethyl-1,3-thiazolidin-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H21ClN3OS3+
assistant