104988-76-3 5-(2-Bromovinyl)-2,2'-anhydrouridine 6H-Furo(2',3':4,5)oxazolo(3,2-a)pyrimidin-6-one, 7-(2-bromoethenyl)-2,3,3a,9a-tetrahydro-3-hydroxy-2-(hydroxymethyl)-, (2R-(2alpha,3beta,3abeta,7(E),9abeta))- Bvanur