You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[5-(2,5-dimethoxyphenyl)-1,3,4-oxadiazol-2-yl]methyl]-2-methylpropan-2-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H21N3O3
assistant