You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (3S,3'R)-3'-methyl-3-[(2S)-4-methylidene-5-oxooxolan-2-yl]spiro[1,2,3,6,7,8a-hexahydroindolizine-8,5'-oxolane]-2',5-dione into molecular formula.
user
C17H21NO5
assistant