You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (2R,6R)-N-[[2-(4-ethoxyphenoxy)pyridin-4-yl]methyl]-2,6-dimethylmorpholine-4-sulfonamide is given. What is its corresponding molecular formula?
user
C20H27N3O5S
assistant