You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(8-fluoro-1,2,3,5,6,7-hexahydro-s-indacen-4-yl)-3-[[4-(2-hydroxypropan-2-yl)-1,3-oxazol-2-yl]sulfonyl]propan-2-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H24FNO5S
assistant