37831-70-2 6H-Benzofuro(3,2-c)(1)benzopyran-3,9-diol, 6a,11a-dihydro-10-(3-methyl-2-butenyl)-, (6aR,11aR)- 6H-Benzofuro(3,2-c)(1)benzopyran-3,9-diol, 6a,11a-dihydro-10-(3-methyl-2-butenyl)-, (6aR-cis)- Phaseollidin