You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S)-1'-[5-(2-amino-3-chloropyridin-4-yl)sulfanyl-3,6-dimethylpyrazin-2-yl]spiro[1,3-dihydroindene-2,4'-piperidine]-1-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H27ClN6S
assistant