You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[2-(3-fluoro-4-methoxyphenyl)ethyl]-1-piperidin-3-ylpyrazole-3-carboxamide;hydrochloride by IUPAC nomenclature, provide its molecular formula.
user
C18H24ClFN4O2
assistant