You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-chloro-7-[2-(1-ethylpyrazol-4-yl)sulfonyl-2-iminoethyl]-1H-indole-3-carbonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H14ClN5O2S
assistant