You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3R,3aR,6aS)-3-(5-bromo-2-methoxyphenyl)-5-(2-ethoxyphenyl)-2-phenyl-3a,6a-dihydro-3H-pyrrolo[3,4-d][1,2]oxazole-4,6-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H23BrN2O5
assistant