7,7′,9,9′-Tetramethoxy-3,3′-dimethyl-3,3′,4,4′-tetrahydro-1H,1′H-5,6′-bibenzo[g]isochromene-4,10,10′-triol

7,7′,9,9′-Tetramethoxy-3,3′-dimethyl-3,3′,4,4′-tetrahydro-1H,1′H-5,6′-bibenzo[g]isochromen-4,10,10′-triol

7,7′,9,9′-Tetramethoxy-3,3′-dimethyl-3,3′,4,4′-tetrahydro-1H,1′H-5,6′-bibenzo[g]isochromene-4,10,10′-triol

7,7′,9,9′-Tétraméthoxy-3,3′-diméthyl-3,3′,4,4′-tétrahydro-1H,1′H-5,6′-bibenzo[g]isochromène-4,10,10′-triol

[5,6′-Bi-1H-naphtho[2,3-c]pyran]-4,10,10′-triol, 3,3′,4,4′-tetrahydro-7,7′,9,9′-tetramethoxy-3,3′-dimethyl-