You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
trimethyl-[3-[(2Z)-2-[(2E,4E,6E)-7-[3-[3-(trimethylazaniumyl)propyl]-1,3-benzothiazol-3-ium-2-yl]hepta-2,4,6-trienylidene]-1,3-benzothiazol-3-yl]propyl]azanium is the IUPAC name of a molecule. Please give its molecular formula.
user
C33H45N4S2+3
assistant