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-[(1S)-1-[1-(2-methoxyphenyl)pyrazol-4-yl]ethyl]-3-(1,3,5-trimethylpyrazol-4-yl)propanamide .
user
C21H27N5O2
assistant