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 6-(2-methylpropyl)-2-oxo-N-[2-(2-propan-2-yloxyphenyl)ethyl]-1H-pyrimidine-4-carboxamide .
user
C20H27N3O3
assistant