You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R,6R)-N-[2-(tert-butylamino)-2-oxoethyl]-2-cyclopropyl-6-methylmorpholine-4-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H27N3O3
assistant