You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-[[(3R)-1,4-dioxaspiro[4.4]nonan-3-yl]methyl]-1,3-benzodioxole-5-carboxamide is given. What is its corresponding molecular formula?
user
C16H19NO5
assistant