You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl (1S,3aS,4R,5R,7aS)-1-[(2-chlorophenyl)carbamoyl]-5-ethyl-2-[(2R)-1-hydroxy-3-methylbutan-2-yl]-3-oxo-3a,4,5,7a-tetrahydro-1H-isoindole-4-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H33ClN2O5
assistant