75514-37-3

(2R,2′R,3R,3′R,9S)-2,2′,3,3′-Tetrahydro-5,5′,6,6′,8,8′-hexahydroxy-2,2′,3,3′-tetramethyl[9,9′-bi-4H-naphtho[2,3-b]pyran]-4,4′-dione