You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-tert-butyl-N-methyl-6-oxo-N-[(3-pyridin-4-yl-1,2-oxazol-5-yl)methyl]-1H-pyrimidine-5-carboxamide ?
user
C19H21N5O3
assistant