You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-chloro-N-[2-[(2E)-2-[[4-(diethylamino)phenyl]methylidene]hydrazinyl]-2-oxoethyl]-1-benzothiophene-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H23ClN4O2S
assistant