You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(E)-N-hydroxy-3-[3-[(E)-3-oxo-3-(2-piperazin-1-ylphenyl)prop-1-enyl]phenyl]prop-2-enamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H23N3O3
assistant