You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2,4-dichloro-N-[2-[[3-[(4-methylpiperazin-1-yl)methyl]phenyl]methylamino]-2-oxoethyl]benzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H26Cl2N4O2
assistant