You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(6S,8aR)-6-(7-amino-3-quinolin-3-yl-6-sulfanylpyrazolo[1,5-a]pyrimidin-5-yl)-6,7,8,8a-tetrahydro-5H-imidazo[1,5-a]pyridine-1,3-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H19N7O2S
assistant