You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5R)-5-methyl-N-[[(2R)-oxolan-2-yl]methyl]-3-thiophen-2-yl-4H-1,2-oxazole-5-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C14H18N2O3S
assistant