You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-cyclopropyl-6-fluoro-7-(2-morpholin-4-ylpyridin-3-yl)-[1,2]thiazolo[5,4-b]quinoline-3,4-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H19FN4O3S
assistant