(1)Benzopyrano(3,4-b)furo(2,3-h)(1)benzopyran-6(6ah)-one, 1,2,12,12a-tetrahydro-8,9-dimethoxy-6a-hydroxy-2-(1-methylethenyl)-, (2R-(2-alpha,6a-beta,12a-alpha))- 545-76-6 6a-beta,12a-alpha,5'-beta-Rotenolone 6a-beta,12a-alpha-Rotenolone NSC 194811 Rotenolon II Rotenolone Rotenolone II trans-12a-Hydroxyrotenone