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 2-[[4-[(1-phenyl-2-pyridin-2-ylethyl)amino]-6-(propan-2-ylamino)-1,3,5-triazin-2-yl]amino]ethanol using the IUPAC nomenclature.
user
C21H27N7O
assistant