You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-[6-(1-cyanoethylidene)-4,8-bis(diethylamino)-[1,3]dithiolo[4,5-f][1,3]benzodithiol-2-ylidene]-3-oxopropanenitrile .
user
C22H24N4OS4
assistant