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 N-[2-(diethylamino)-2-(3-methoxyphenyl)ethyl]-3-(6-methyl-2,4-dioxo-1H-pyrimidin-5-yl)propanamide using the IUPAC nomenclature.
user
C21H30N4O4
assistant