(3aS,5aR,10bS,10cR)-3a,10b-Dimethyl-1,2,3,3a,5a,7,10b,10c-octahydro-4H,9H-[2]benzofuro[7,1-fg]isochromene-4,9-dione

(3aS,5aR,10bS,10cR)-3a,10b-Dimethyl-1,2,3,3a,5a,7,10b,10c-octahydro-4H,9H-[2]benzofuro[7,1-fg]isochromen-4,9-dion

(3aS,5aR,10bS,10cR)-3a,10b-Dimethyl-1,2,3,3a,5a,7,10b,10c-octahydro-4H,9H-[2]benzofuro[7,1-fg]isochromene-4,9-dione

(3aS,5aR,10bS,10cR)-3a,10b-Diméthyl-1,2,3,3a,5a,7,10b,10c-octahydro-4H,9H-[2]benzofuro[7,1-fg]isochromène-4,9-dione

4H,9H-Furo[2′,3′,4′:4,5]naphtho[2,1-c]pyran-4,9-dione, 1,2,3,3a,5a,7,10b,10c-octahydro-3a,10b-dimethyl-, (3aS,5aR,10bS,10cR)-

(3aS,3a1R,5aR,10bS)-3a,10b-dimethyl-1,2,3,3a,7,10b-hexahydroisobenzofuro[7,1-fg]isochromene-4,9(3a1H,5aH)-dione

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