IUPAC:5'-(5-hydroxy-2-oxo-2,5-dihydrofuran-3-yl)-2,5-dimethyl-3,4,4a,7,8,8a-hexahydro-2H-spiro[naphthalene-1,3'-oxolane]-2',7-dione
IUPAC:5'-(5-hydroxy-2-oxo-2,5-dihydrofuran-3-yl)-2,5-dimethyl-3,4,4a,7,8,8a-hexahydro-2H-spiro[naphthalene-1,3'-oxolane]-2',7-dione