You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4R,5R)-4-(4-chlorophenyl)-N-(3-hydroxypropyl)-2-morpholin-4-yl-7-oxo-5,6-dihydro-4H-thieno[2,3-c]pyridine-5-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H24ClN3O4S
assistant