You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(E)-2-cyano-3-(1-methylimidazol-2-yl)-N-propan-2-yl-N-(2-sulfanylidene-3H-1,3-benzothiazol-6-yl)prop-2-enamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H17N5OS2
assistant