You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(1S,5R,6R)-2-(5,5-dimethyl-4-oxo-6,7-dihydro-1-benzofuran-2-carbonyl)-2-azabicyclo[3.2.0]heptan-6-yl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H24N2O4
assistant