You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-[(2R,6R)-2,6-dimethylmorpholin-4-yl]-7-fluoro-3-[(5R)-5-methyl-2-oxo-1,3-thiazolidin-3-yl]-1H-indene-5-carbaldehyde The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H23FN2O3S
assistant