You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N,N-diethyl-5-[4-[(E)-3-phenylprop-2-enyl]piperazin-1-yl]pyridine-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H30N4O
assistant