You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 4-but-1-en-2-yl-1,3-dimethylpyrazole;1,5-dimethyl-4-propan-2-ylpyrazole;ethane using the IUPAC nomenclature.
user
C19H34N4
assistant