You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-(diethylamino)-N-[2-(diethylamino)ethyl]-N-(6-methoxy-1,3-benzothiazol-2-yl)benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H34N4O2S
assistant