IUPAC:4,6'-dihydroxy-2',5',5',8'a-tetramethyl-3',4',4'a,5',6',7',8',8'a-octahydro-2'H,3H-spiro[1-benzofuran-2,1'-naphthalene]-6,7-dicarbaldehyde
IUPAC:4,6'-dihydroxy-2',5',5',8'a-tetramethyl-3',4',4'a,5',6',7',8',8'a-octahydro-2'H,3H-spiro[1-benzofuran-2,1'-naphthalene]-6,7-dicarbaldehyde