You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-[(2R)-2,6-dimethylmorpholin-4-yl]phenyl]-5-(propan-2-ylsulfonylamino)pentanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H33N3O4S
assistant