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 ethyl 4-[4-[benzyl(methyl)carbamoyl]-6-methylpyrimidin-2-yl]piperazine-1-carboxylate using the IUPAC nomenclature.
user
C21H27N5O3
assistant