You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[5-methyl-2-[3-methyl-5-[1-(3-sulfonatopropyl)furo[3,2-d][1,3]thiazol-1-ium-2-yl]penta-2,4-dienylidene]-1,3-benzothiazol-3-yl]propane-1-sulfonate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H27N2O7S4-
assistant