IUPAC:6-(hydroxymethyl)-5,5-dimethyl-10'-methylidene-3'-oxaspiro[cyclohexane-1,5'-tricyclo[7.2.1.0^{1,6}]dodecan]-3-ene-2,2',11'-trione
IUPAC:6-(hydroxymethyl)-5,5-dimethyl-10'-methylidene-3'-oxaspiro[cyclohexane-1,5'-tricyclo[7.2.1.0^{1,6}]dodecan]-3-ene-2,2',11'-trione