You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(4-chloro-2,5-diethylpyrazol-3-yl)methyl]-N-ethyl-2-methylbut-3-en-1-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H26ClN3
assistant