2,2'-Spirobi[chroman]-6,6',7,7'-tetrol,4,4,4',4'-tetramethyl- (8CI); 4,4,4',4'-Tetramethyl-2,2'-spirobichromane-6,7,6',7'-tetrol;6,6',7,7'-Tetrahydroxy-4,4,4',4'-tetramethyl-2,2'-spirobichroman; NSC 512920
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