You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3R)-N-(4-ethoxyphenyl)-1-[3-(4-methoxyphenyl)-1,2,4-oxadiazol-5-yl]-N-propylpiperidine-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H32N4O4
assistant