You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
propyl 4-[[2-[4-[(3aS,4R,7aR)-4-methyl-1,3-dioxo-3a,4,7,7a-tetrahydroisoindol-2-yl]benzoyl]oxyacetyl]amino]benzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H28N2O7
assistant