You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 3-[3,5-dimethyl-1-(2-methylpropyl)pyrazol-4-yl]-N-[(2-pyrazol-1-ylpyridin-3-yl)methyl]propanamide ?
user
C21H28N6O
assistant