1,5-Cyclononadiene-1,2,5,6-tetracarboxylic 1,2:5,6-dianhydride, 8-[(3,6-dihydro-6-oxo-2H-pyran-2-yl)hydroxymethyl]-3-hydroxy-4-(1-hydroxyheptyl)- 1H-Cyclonona[1,2-c:5,6-c']difuran-1,3,6,8(4H)-tetrone, 10-[(3,6-dihydro-6-oxo-2H-pyran-2-yl)hydroxymethyl]-5,9,10,11-tetrahydro-4-hydroxy-5-(1-hydroxyheptyl)-, [4R*,5S*(R*),10S*[S*(S*)]]-(+)- 21794-01-4 NSC126729 RUBRATOXIN B