4,6′,7′-Trihydroxy-2′,5′,5′,8a′-tetramethyl-3′,4′,4a′,5′,6′,7′,8′,8a′-octahydro-2′H,3H-spiro[1-benzofuran-2,1′-naphthalene]-6,7-dicarbaldehyde

4,6′,7′-Trihydroxy-2′,5′,5′,8a′-tetramethyl-3′,4′,4a′,5′,6′,7′,8′,8a′-octahydro-2′H,3H-spiro[1-benzofuran-2,1′-naphthalene]-6,7-dicarbaldehyd

4,6′,7′-Trihydroxy-2′,5′,5′,8a′-tetramethyl-3′,4′,4a′,5′,6′,7′,8′,8a′-octahydro-2′H,3H-spiro[1-benzofuran-2,1′-naphthalene]-6,7-dicarbaldehyde

4,6′,7′-Trihydroxy-2′,5′,5′,8a′-tétraméthyl-3′,4′,4a′,5′,6′,7′,8′,8a′-octahydro-2′H,3H-spiro[1-benzofuran-2,1′-naphthalene]-6,7-dicarbaldéhyde

Spiro[benzofuran-2(3H),1′(2′H)-naphthalene]-6,7-dicarboxaldehyde, 3′,4′,4′a,5′,6′,7′,8′,8′a-octahydro-4,6′,7′-trihydroxy-2′,5′,5′,8′a-tetramethyl-