You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[1-(1-acetyl-2,3-dihydroindol-5-yl)-1-oxopropan-2-yl] 2-(9-oxoacridin-10-yl)acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H24N2O5
assistant