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 1-(5-chlorothiophen-2-yl)sulfinyl-3-[3-cyano-4-(3-oxo-4,5-dihydro-1H-2-benzazepin-2-yl)phenyl]-2-methylguanidine .
user
C23H20ClN5O2S2
assistant