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 4-[[(4S)-4-hydroxy-3,3-dimethylcyclohexyl]methyl]-2-(2-pyrimidin-5-ylethylamino)pyrimidine-5-carbonitrile using the IUPAC nomenclature.
user
C20H26N6O
assistant