Synonyms: [1]Benzopyrano[3,4-b]furo[2,3-h][1]benzopyran-6(6aH)-one,1,2,12,12a-tetrahydro-8,9-dimethoxy-2-(1-methylethenyl)-, [2R-(2a,6ab,12ab)]-; [1]Benzopyrano[3,4-b]furo[2,3-h][1]benzopyran-6(6abH)-one, 1,2,12,12ab-tetrahydro-2a-isopropenyl-8,9-dimethoxy-, (+)-(8CI); (+)-Epirotenone; 5'b-Epirotenone; Epirotenone; Epirotenone, (+)-