You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(4-bromo-2,5-dimethylpyrazol-3-yl)-1-(3-chloropyridin-4-yl)-N-ethylethanamine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C14H18BrClN4
assistant