You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (E)-3-(3,4-dimethoxyphenyl)-1-[3-[3-(furan-2-yl)-1,2,4-oxadiazol-5-yl]azetidin-1-yl]prop-2-en-1-one ?
user
C20H19N3O5
assistant