(1)-Benzopyrano(3,4-b)furo(2,3-h)(1)benzopyran-6(6aH)-one, 1,2,12,12a-tetrahydro-6a-hydroxy-8,9-dimethoxy-2-(1-methylethyl)-, (2R-(2alpha,6aalpha,12aalpha))- 1',2'-Dihydro-6-hydroxyrotenone 95463-62-0 DH-6-OH-rotenone