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)-2-cyano-N-(4-ethoxyphenyl)-3-(3-ethoxy-5-prop-2-enyl-4-prop-2-ynoxyphenyl)prop-2-enamide ?
user
C26H26N2O4
assistant