1-Oxaspiro(2,5)octan-6-one, 4-(1,2-epoxy-1,5-dimethyl-4-hexenyl)-4-hydroxy-5-methoxy-, (1S,2R,3S,4R,5S)-(-)- 19683-98-8 AIDS-042740 AIDS042740 Graphinone Ovalicin SL-1846