You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(E)-3-[4-[(E)-3-[2-chloro-5-(4-methylpiperazin-1-yl)phenyl]-3-oxoprop-1-enyl]phenyl]prop-2-enoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H23ClN2O3
assistant