(5R,5′R,6R,6′R,10aR,10a′R)-1,1′,5,5′,9,9′-Hexahydroxy-10a,10a′-bis(hydroxymethyl)-6,6′-dimethyl-5,5′,6,6′,7,7′,10a,10a′-octahydro-8H,8′H-4,4′-bixanthene-8,8′-dione

(5R,5′R,6R,6′R,10aR,10a′R)-1,1′,5,5′,9,9′-Hexahydroxy-10a,10a′-bis(hydroxymethyl)-6,6′-dimethyl-5,5′,6,6′,7,7′,10a,10a′-octahydro-8H,8′H-4,4′-bixanthen-8,8′-dion

(5R,5′R,6R,6′R,10aR,10a′R)-1,1′,5,5′,9,9′-Hexahydroxy-10a,10a′-bis(hydroxymethyl)-6,6′-dimethyl-5,5′,6,6′,7,7′,10a,10a′-octahydro-8H,8′H-4,4′-bixanthene-8,8′-dione

(5R,5′R,6R,6′R,10aR,10a′R)-1,1′,5,5′,9,9′-Hexahydroxy-10a,10a′-bis(hydroxyméthyl)-6,6′-diméthyl-5,5′,6,6′,7,7′,10a,10a′-octahydro-8H,8′H-4,4′-bixanthène-8,8′-dione

[5,5′-Bi-1H-xanthene]-1,1′-dione, 2,2′,3,3′,4,4′,4a,4′a-octahydro-4,4′,8,8′,9,9′-hexahydroxy-4a,4′a-bis(hydroxymethyl)-3,3′-dimethyl-, (3R,3′R,4R,4′R,4aR,4a′R)-