You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named methyl (3S,4R)-1-benzyl-4-(2-methoxy-2-oxoethyl)-3-(3-methoxy-3-oxopropyl)-3,4-dihydro-2H-pyridine-5-carboxylate is given. What is its corresponding molecular formula?
user
C21H27NO6
assistant