Synonyms: 3H-Bis[1]benzopyrano[3,4-b:6',5'-e]pyran-7(7aH)-one,13,13a-dihydro-6,7a-dihydroxy-9,10-dimethoxy-3,3-dimethyl-, (7aS,13aS)- (9CI);3H-Bis[1]benzopyrano[3,4-b:6',5'-e]pyran-7(7aH)-one,13,13a-dihydro-6,7a-dihydroxy-9,10-dimethoxy-3,3-dimethyl-, (7aS-cis)-