(8,8'-Bi-2H-1-Benzopyran)-2,2'-dione, 7,7'-dihydroxy-4,4'-dimethoxy-5,5'-dimethyl- 69975-77-5 7,7'-Dihydroxy-4,4'-dimethoxy-5,5'-dimethyl-(8,8'-bi-2H-1-benzopyran)-2,2'-dione Bis(8,8'-(7-hydroxy-4-methoxy-5-methylcoumarin)) Orlandin