You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[4-[4-(aminomethyl)benzoyl]piperazin-1-yl]-N-(2,3-dimethylphenyl)acetamide;hydrochloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H29ClN4O2
assistant