You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance [(1'R,2S,5'R,7'S,11'R,12'R,13'S,14'S)-1',11'-diacetyloxy-3',6',6',14'-tetramethyl-2'-oxospiro[oxirane-2,10'-tricyclo[10.3.0.05,7]pentadec-3-ene]-13'-yl] benzoate .
user
C31H38O8
assistant