You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 5-[[(2R)-2-(dimethylamino)-2-(2-methoxyphenyl)ethyl]amino]-2-methyl-1,3-oxazole-4-carbonitrile into its molecular formula.
user
C16H20N4O2
assistant