You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 4-[3-amino-6-(8-chloroquinolin-6-yl)-5-(1-methylpyrazol-3-yl)pyrazin-2-yl]sulfanyl-1-methylpyrrolidin-2-one is given. What is its corresponding molecular formula?
user
C22H20ClN7OS
assistant