You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[2-[(4R)-4-cyano-1,3-thiazolidin-3-yl]-2-oxoethyl]-6-[(3S)-3-fluoro-3-methylpyrrolidin-1-yl]quinoline-4-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C21H22FN5O2S
assistant