You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[(3R)-2,3-dihydro-1,4-benzodioxin-3-yl]methyl]-N-methyl-2-(2-oxo-1,3-benzoxazol-3-yl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H18N2O5
assistant