You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[4-[5-[(2,4-dichlorophenoxy)methyl]-1,3,4-oxadiazol-2-yl]phenyl]morpholine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H17Cl2N3O3
assistant