You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
7-(1,2,3,4,4a,5,7,7a-octahydropyrrolo[3,4-b]pyridin-6-yl)-1-cyclopropyl-6-fluoro-8-methoxy-2-methyl-4-oxoquinoline-3-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H26FN3O4
assistant