IUPAC:(3R,4'R,5S,6'R,8'S)-5-(furan-3-yl)-6'-methyl-3'-oxaspiro[oxolane-3,7'-tricyclo[6.3.1.0^{4,12}]dodecan]-1'(12')-ene-2,2'-dione
IUPAC:(3R,4'R,5S,6'R,8'S)-5-(furan-3-yl)-6'-methyl-3'-oxaspiro[oxolane-3,7'-tricyclo[6.3.1.0^{4,12}]dodecan]-1'(12')-ene-2,2'-dione