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 6-N-ethyl-4-N-[(1-ethylpyrrolidin-2-yl)methyl]-4-N,5-dimethylpyrimidine-4,6-diamine using the IUPAC nomenclature.
user
C15H27N5
assistant