You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-ethyl-3,3-dimethyl-1-(2-methyl-4-nitro-5-propan-2-ylpyrazol-3-yl)butan-2-amine .
user
C15H28N4O2
assistant