6H-Benzofuro[3,2-c][1]benzopyran, 6a,11a-dihydro-3,9-dimethoxy-, (6aR,11aR)-rel- 6H-Benzofuro[3,2-c][1]benzopyran, 6a,11a-dihydro-3,9-dimethoxy-, cis- 7678-43-5 AIDS-058999 AIDS058999 Homopterocarpin NSC629831 Pterocarpan analog