You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(aminomethyl)-N-[[4-(piperidine-1-carbonyl)phenyl]methyl]-1,3-thiazole-4-carboxamide;hydrochloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H23ClN4O2S
assistant