You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 2-(1,3-benzoxazol-2-ylamino)-4-methyl-N-[[(2S)-oxolan-2-yl]methyl]pyrimidine-5-carboxamide .
user
C18H19N5O3
assistant